George gajda (10 risultati)

Hardcover. Condizione: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

Hardcover. Condizione: Very Good. Condizione sovraccoperta: Very good. First Edition. Previous owner's name.

Hardcover. Condizione: Fine. No Jacket. Second edition. 214p, 22cm tall, octavo. Black leatherette over boards, gilt title on front and spine. "Methods of recoveries and refining from primary and secondary sources of precious metals such as major industrial uses in jewelry, electronics, and dentistry.".…

Hardcover. Condizione: Good. 1st Edition. text clean and unmarked. binding tight. boards have some wear along edges and at corners. edges of pages have toning and age-related stains. name written on front free end paper.

hardcover. Condizione: Good.

HARDCOVER. Condizione sovraccoperta: very good. 2nd edition. 214pp color illustrations octavo cloth. very good in slightly worn dustwrapper.

Hardcover. Condizione: new. New Copy. Customer Service Guaranteed.

hardcover. Condizione: New. In shrink wrap. Looks like an interesting title.

Textured Boards. Condizione: Near Fine. Near Fine (in mylar). First Edition. Beautiful, gift quality copy. Unclipped dust jacket, in mylar. 214pp. Size: 8vo - over 7¾" - 9¾" tall. Photographs/Graphs/Charts/Folded Maps/Rear Pocket Map (illustratore). Hardcover.

Hard Back. Condizione: Fine. Condizione sovraccoperta: Fine. Second Edition. 214 Pages. Very attractive never-read book with black boards and gold lettering. Gold store label for The Prospectors Cache pasted to endpaper. Loose and could be easily removed. No other marks or stamps. This book is written specifically for entrepreneurs who contemplate going into the business of precious metals refining, or to increase their present technical capability in their businesses which may be jewelry fabrication, dental laboratories, metal re-cycling = of precious metals or electroplatinq. A large portion of this book is given to analytical work which enables the reader to recognize the value and purity of the materials. The gold and all the precious metals with which the gold is closely associated is valuable in any form and in any quantity and it is being re-processed and placed on the market. This book describes in detail how it is done on a commercial basis or in small quantities. This book may also serve as a source of basic knowledge for anyone who ventures to handle materials containing gold and other precious metals, and can be used as a reference for engineers and designers of extractive metallurgical processes. Contents in Six Chapters: The Chemical Properties of Gold, Identification of Material & Chemical Analysis, Gold Processing, Separations and Purification of Precious Metals Concentrates, Refining of Precious Metals, and Precious Metals and Their Alloys. Note: Chapter Five is omitted in the Contents Page and it is Titled Refini;ngof Precious Metals beginning on page 163.…