Peter edmondson (144 risultati)

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Zoom Books East, Glendale Heights, IL, U.S.A.Zoom Books East
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 4,01
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: good. Book is in good condition and may include underlining highlighting and minimal wear. The book can also include "From the library of" labels. May not contain miscellaneous items toys, dvds, etc. . We offer 100% money back guarantee and 24 7 customer service.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press (edition ), 2020
- Brossura
Da: BooksRun, Philadelphia, PA, U.S.A.BooksRun
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 4,49
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Paperback. Condizione: Very Good. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Greenworld Books, arlington, TX, U.S.A.Greenworld Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 5,08
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: good. Fast Free Shipping â" Good condition. It may show normal signs of use, such as light writing, highlighting, or library markings, but all pages are intact and the book is fully readable. A solid, complete copy that's ready to enjoy.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Greenworld Books, arlington, TX, U.S.A.Greenworld Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 5,28
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: very_good. Fast Free Shipping â" Very Good condition book with a firm cover and clean pages. Shows normal use and some light wear or limited notes markings. A solid, nice copy to enjoy.

Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Better World Books, Mishawaka, IN, U.S.A.Better World Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 6,01
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: Very Good. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Better World Books, Mishawaka, IN, U.S.A.Better World Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 6,01
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: Very Good. Former library copy. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Better World Books: West, Reno, NV, U.S.A.Better World Books: West
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 6,01
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Better World Books, Mishawaka, IN, U.S.A.Better World Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 6,01
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: Good. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Goodwill of Greater Milwaukee and Chicago, Racine, WI, U.S.A.Goodwill of Greater Milwaukee and Chicago
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 5,98
EUR 2,60 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Condizione: good. Book is considered to be in good or better condition. The actual cover image may not match the stock photo. Hard cover books may show signs of wear on the spine, cover or dust jacket. Paperback book may show signs of wear on spine or cover as well as having a slight bend, curve or creasing to it. Book should ha…ve minimal to no writing inside and no highlighting. Pages should be free of tears or creasing. Stickers should not be present on cover or elsewhere, and any CD or DVD expected with the book is included. Book is not a former library copy.

- Rilegato
Da: WorldofBooks, Goring-By-Sea, WS, Regno UnitoWorldofBooks
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 3,37
EUR 6,56 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 3 disponibili
Hardback. Condizione: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: MusicMagpie, Stockport, Regno UnitoMusicMagpie
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 4,14
EUR 6,43 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Condizione: Very Good. Condizione sovraccoperta: 48121652. 1783419916. 7/7/2026 10:25:16 AM.

- Rilegato
Da: Better World Books Ltd, Dunfermline, Regno UnitoBetter World Books Ltd
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 5,65
EUR 5,85 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 2 disponibili
Condizione: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

- Rilegato
Da: HPB-Diamond, Dallas, TX, U.S.A.HPB-Diamond
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 10,65
EUR 3,25 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
hardcover. Condizione: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

- Rilegato
Da: ThriftBooks-Dallas, Dallas, TX, U.S.A.ThriftBooks-Dallas
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 14,12
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Hardcover. Condizione: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Solr Books, Lincolnwood, IL, U.S.A.Solr Books
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 8,08
EUR 6,92 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Condizione: new.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business,Buckingham, Marcus,Edmondson, Amy C.,Cappelli, Peter,Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Sell Books, Elland, YORKS, Regno UnitoSell Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 0,89
EUR 14,23 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
paperback. Condizione: Good. Our good condition books are generally good for reading but not for gifting or collecting. They could have imperfections such as creasing, fanning, inscriptions, margin notes, yellowing, staining on edge or cover or pages, bumps, scuffs, etc etc (sometimes multiple of these). It's a wide category tha…t encompasses anything that isn't almost-new down to anything that is slightly better than poor. We would NOT recommend gifting Good books - these should be considered reading copies. Our books are dispatched from a Yorkshire former cotton mill. We list via barcode/ISBN so please note that the images are stock images and may not be the exact copy you receive, furthermore the details about edition and year might not be accurate as many publishers reuse the same ISBN for multiple editions and as we simply scan a barcode or enter an ISBN we do not check the validity of the edition data when listing. If you're looking for an exact edition please don't order (at least not without checking with us first, although we don't always have time to check). We aim to dispatch prompty, the service used will depend on order value and book size. We can ship to most countries, see our shipping policies. Payment is via Abe only.
Lingua: Inglese
Editore: Medicine Wheel, Huntsville, Texas, 1983
- Brossura
- Prima edizione
- Firmato
Da: West With The Night, Tucson, AZ, U.S.A.West With The Night
Contatta il venditoreVenditore con 5 stelleCondizione: Usato
EUR 12,47
EUR 3,04 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloWraps. First edition. 56 p. Very good. Signed by author. Light shelfwear, signed by Gary Edmondson.

HBR's 10 Must Reads 2021
Amy C. Edmondson, Peter Cappelli, Laura Morgan Roberts, Harvard Business Review, Marcus Buckingham
Lingua: Inglese
Editore: Harvard Business Review Press, US, 2020
- Brossura
Da: Rarewaves.com USA, London, LONDO, Regno UnitoRarewaves.com USA
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 18,30
Spedizione gratuitaSpedito da Regno Unito a U.S.A.Quantità: 2 disponibili
Paperback. Condizione: New. A year's worth of management wisdom, all in one place.We've reviewed the ideas, insights, and best practices from the past year of Harvard Business Review to keep you up-to-date on the most cutting-edge, influential thinking driving business today. With authors from Marcus Buckingham to Amy Edmondson…and company examples from Lyft to Disney, this volume brings the most current and important management conversations right to your fingertips.This book will inspire you to:Rethink whether constant, candid feedback really helps employees thriveMove beyond diversity and inclusion to creating a racially just workplaceAdopt connected strategies that anticipate your customers' needsNavigate the challenges of dual-career relationshipsUnderstand when data creates competitive advantageand#8212and when it doesn'tBreak through the organizational barriers that impede AI initiativesLead in a new era of climate actionThis collection of articles includes "The Feedback Fallacy," by Marcus Buckingham and Ashley Goodall; "Cross-Silo Leadership," by Tiziana Casciaro, Amy C. Edmondson, and Sujin Jang; "Toward a Racially Just Workplace," by Laura Morgan Roberts and Anthony J. Mayo; "The Age of Continuous Connection," by Nicolaj Siggelkow and Christian Terwiesch; "The Hard Truth about Innovative Cultures," by Gary P. Pisano; "Creating a Trans-Inclusive Workplace," by Christian N. Thoroughgood, Katina B. Sawyer, and Jennica R. Webster; "When Data Creates Competitive Advantage," by Andrei Hagiu and Julian Wright; "Your Approach to Hiring Is All Wrong," by Peter Cappelli; "How Dual-Career Couples Make It Work," by Jennifer Petriglieri; "Building the AI-Powered Organization," by Tim Fountaine, Brian McCarthy, and Tamim Saleh; "Leading a New Era of Climate Action," by Andrew Winston; and "That Discomfort You're Feeling Is Grief," by Scott Berinato.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business School Press, 2020
- Brossura
Da: Majestic Books, Hounslow, Regno UnitoMajestic Books
Contatta il venditoreVenditore con 4 stelleCondizione: Nuovo
EUR 12,47
EUR 7,61 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Condizione: New. pp. 192.

HBR's 10 Must Reads 2021
Amy C. Edmondson, Peter Cappelli, Laura Morgan Roberts, Harvard Business Review, Marcus Buckingham
Lingua: Inglese
Editore: Harvard Business Review Press, US, 2020
- Brossura
Da: Rarewaves USA, OSWEGO, IL, U.S.A.Rarewaves USA
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 20,71
Spedizione gratuitaSpedito in U.S.A.Quantità: Più di 20 disponibili
Paperback. Condizione: New. A year's worth of management wisdom, all in one place.We've reviewed the ideas, insights, and best practices from the past year of Harvard Business Review to keep you up-to-date on the most cutting-edge, influential thinking driving business today. With authors from Marcus Buckingham to Amy Edmondson…and company examples from Lyft to Disney, this volume brings the most current and important management conversations right to your fingertips.This book will inspire you to:Rethink whether constant, candid feedback really helps employees thriveMove beyond diversity and inclusion to creating a racially just workplaceAdopt connected strategies that anticipate your customers' needsNavigate the challenges of dual-career relationshipsUnderstand when data creates competitive advantageand#8212and when it doesn'tBreak through the organizational barriers that impede AI initiativesLead in a new era of climate actionThis collection of articles includes "The Feedback Fallacy," by Marcus Buckingham and Ashley Goodall; "Cross-Silo Leadership," by Tiziana Casciaro, Amy C. Edmondson, and Sujin Jang; "Toward a Racially Just Workplace," by Laura Morgan Roberts and Anthony J. Mayo; "The Age of Continuous Connection," by Nicolaj Siggelkow and Christian Terwiesch; "The Hard Truth about Innovative Cultures," by Gary P. Pisano; "Creating a Trans-Inclusive Workplace," by Christian N. Thoroughgood, Katina B. Sawyer, and Jennica R. Webster; "When Data Creates Competitive Advantage," by Andrei Hagiu and Julian Wright; "Your Approach to Hiring Is All Wrong," by Peter Cappelli; "How Dual-Career Couples Make It Work," by Jennifer Petriglieri; "Building the AI-Powered Organization," by Tim Fountaine, Brian McCarthy, and Tamim Saleh; "Leading a New Era of Climate Action," by Andrew Winston; and "That Discomfort You're Feeling Is Grief," by Scott Berinato.

Faith, Reason, and Political Life Today
Brady, Michelle E. & Paul A. Cantor & Thomas Darby & Henry T. Edmondson Iii & Stephen L. Gardner & Marc D. Guerra & Gregory R. Johnson & Joseph M. Knippenberg & Peter Augustine Lawler & Daniel J. Mahoney & James F. Pontuso & Paul Seato
- Brossura
Da: Skoob-ebooks, Pontiac, QC, CanadaSkoob-ebooks
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 15,96
EUR 11,27 spedizioneSpedito da Canada a U.S.A.Quantità: 1 disponibili
Softcover. Condizione: Good. Average wear. The pages are clean with no highlighting or writing detected. Cover has a few marks and other blemishes. 30-day returns. Shipments destined outside Canada may be subject to duties in the country where the customer resides. ; 155.45 X 1.11 X 235.2 inches; 296 pages; R0 s0.

- Brossura
Da: ThriftBooks-Atlanta, AUSTELL, GA, U.S.A.ThriftBooks-Atlanta
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Buono
EUR 29,43
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Paperback. Condizione: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

TNT Twelve New Tricks
FABIAN (editor) (illustrated by Dennis); Ron Bishop; Jack Shepherd; Robert W. Edmondson; Syd the Sorcerer; Arthur Eydmann; John K. Bays; Jack Le Dair; A. C. Jacobs; Peter A. McDonald; Arnold Gibson:
Editore: Supreme Magic Co Ltd, 1969
- Brossura
Da: Shore Books, London, Regno UnitoShore Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 5,91
EUR 12,88 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloSoft cover. Condizione: Very Good. Octavo paper back, printed card covers, single section staple binding, illustrated, 52 pages. Includes some performance and other hints by Ron Bishop and tricks and effects by other authors. (VM2).

Hbr'S 10 Must Reads 2021 : The Definitive Management Ideas Of The Year From Harvard Business Review (With Bonus Article "The Feedback Fallacy" By Marcus Buckingham And Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Romtrade Corp., STERLING HEIGHTS, MI, U.S.A.Romtrade Corp.
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 31,67
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: New. This is a Brand-new US Edition. This Item may be shipped from US or any other country as we have multiple locations worldwide.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Harvard Business Review,Marcus Buckingham,Amy C. Edmondson,Peter Cappelli,Laura Morgan Roberts
Lingua: Inglese
Editore: Harvard Business Review Press 2020-10-20, 2020
- Brossura
Da: Chiron Media, Wallingford, Regno UnitoChiron Media
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 15,21
EUR 18,14 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 3 disponibili
Paperback. Condizione: New.

Hbr'S 10 Must Reads 2021 : The Definitive Management Ideas Of The Year From Harvard Business Review (With Bonus Article "The Feedback Fallacy" By Marcus Buckingham And Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: SMASS Sellers, IRVING, TX, U.S.A.SMASS Sellers
Contatta il venditoreVenditore con 4 stelleCondizione: Nuovo
EUR 33,78
Spedizione gratuitaSpedito in U.S.A.Quantità: 1 disponibili
Condizione: New. Brand New Original US Edition. Customer service! Satisfaction Guaranteed.

HBR's 10 Must Reads 2021: The Definitive Management Ideas of the Year from Harvard Business Review (with bonus article "The Feedback Fallacy" by Marcus Buckingham and Ashley Goodall)
Review, Harvard Business; Buckingham, Marcus; Edmondson, Amy C.; Cappelli, Peter; Roberts, Laura Morgan
Lingua: Inglese
Editore: Harvard Business Review Press, 2020
- Brossura
Da: Ria Christie Collections, Uxbridge, Regno UnitoRia Christie Collections
Contatta il venditoreVenditore con 5 stelleCondizione: Nuovo
EUR 21,97
EUR 14,03 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 6 disponibili
Condizione: New. In English.

- Brossura
Da: "Pursuit of Happiness" Books, Oakland, CA, U.S.A."Pursuit of Happiness" Books
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Ottimo
EUR 33,24
EUR 3,47 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Soft cover. Condizione: Fine. Publisher: Paradice Publishing Company, 1998, FINE, Soft Cover, ISBN: 89-7330-055-5. Book.
Editore: American Demographics Institute, 1986
- Brossura
- Prima edizione
Da: Indian Hills Books, Blountville, TN, U.S.A.Indian Hills Books
Contatta il venditoreVenditore con 4 stelleCondizione: Usato - Ottimo
EUR 21,89
EUR 3,43 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloSoft cover. Condizione: Fine. No Jacket. First Edition. 65 pages. No marks. Appears unread.

Lingua: Inglese
Editore: Context Products, United Kingdom, Packington, 2014
- Brossura
Da: WorldofBooks, Goring-By-Sea, WS, Regno UnitoWorldofBooks
Contatta il venditoreVenditore con 5 stelleCondizione: Usato - Molto buono
EUR 34,45
EUR 6,56 spedizioneSpedito da Regno Unito a U.S.A.Quantità: 1 disponibili
Paperback. Condizione: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.