P j mill (78 risultati)

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Pp. 268. With illustrations. Illustrated original boards. 8vo. A very good copy. 390 Gramm.

Paperback. Condizione: Brand New. liberty fund pbk. ed edition. 717 pages. 9.00x6.00x1.50 inches. In Stock.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Paperback. Condizione: Brand New. liberty fund pbk. ed edition. 717 pages. 9.00x6.00x1.50 inches. In Stock.

Paperback. Condizione: Brand New. liberty fund pbk. ed edition. 717 pages. 9.00x6.00x1.50 inches. In Stock.

Kl.8°. 196 S. Mit 1 Portr. Original-Leinenband mit Schutzumschlag. Name auf Vorsatz, Schutzumschlag teilweise verblaßt. Gewicht (Gramm): 350.

Hardcover. Condizione: Very Good. No Jacket. 1st Edition. PREVIOUS OWNER NAME STAMPS OTHERWISE UNMARKED, SPINE SUN FADED.

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.

Hardcover. Condizione: Gut. 683 p., with figures, Good condition. Library copy with usual marks. Cover very slightly worn. Sprache: Englisch Gewicht in Gramm: 1350.

TIDY EX LIBRARY, super octavo, green buckram boards, gilt stamped lettering to spine, upper edges stained pink, cxxxixi + 578 pp, VG+ ( usual library markings, d/w cellotaped onto boards, slight cellotape staining to front + rear eps + prelims, slight bruising to spine, slight creasing to edge of pages cxix to cxxxvi ) in d/w VG ( usual library markings, slight chafing to covers, cellotape coming off top edge of cover, v slight creasing to plastic cover ).…

]. 341p. Orig. cloth.

Shell shape in gastropods is generated by the spiral path of shell material laid down at the aperture. Many aspects of shape will therefore be associated. Such associations may indicate constraints, limiting the range of variation seen in populations as a response to different environmental pressures. Associations of shell variables were studied using the sibling species Littorina saxatilis and Littorina arcana. The same closely associated subset of three variables was found in both species, related to the maintenance of a constant aperture shape, despite variation in overall morphology. These closely associated variables describe similar variation in the two species. The less closely associated variables may contribute more to inter-specific differences. 10 pp., 8 figs, 4.…

Populations of the gastropods Littorina rudis and L. arcana on the rocky shore at Westdale, Pembroke, South Wales, have been investigated. Foot area has been related to shell length. It is shown that there are differences in the areas of the expanded foot of different groups of snails: those from more exposed sites have a relatively larger foot. Littorina arcana achieves the greatest foot area of all, and it extends on to the most exposed rocks investigated, where L. rudis is absent. It is suggested that this may be important in ecological separation of the two species. It is noted that there is still uncertainty over the taxonomic identity of what is referred to here as ?Littorina rudis?, and further work is in progress. 8 pp., 2 figs, gr. 8.…

The sibling marine snails Littorina obtusata (L.) and Littorina mariae Sacchi & Rastelli are sympatrically distributed and the shells of both species are subject to similar breaking forces by predatory crabs. Nevertheless, the two species exhibit rather different growth and defence strategies. To determine growth patterns, we measured changes in five morphological variables with increasing shell length: body whorl thickness at the point of crushing force application, shell height (related to globosity), shell mass, body mass, and apertural lip thickness. We also measured ontogenetic changes in the ability to withstand shell crushing. For most morphological variables, L. mariae showed uniformly allometric growth of juveniles into adults. In contrast, L. obtusata usually exhibited a distinct change in growth pattern upon reaching maturity. As adults, L. mariae showed a more sustained increase in overall shell mass and in body whorl thickness (defence against crushing attacks) and also had proportionally thicker apertural lips (defence against peeling attacks). Littorina obtusata, however, grew to a larger size and their shells could accommodate larger bodies at all sizes. Furthermore, the strength of L. obtusata shells increased faster than could be accounted for by either overall shell mass or thickness at the point of force application, suggesting strengthening by other means such as changes in shell microstructure or shape (other than globosity). These results illustrate the viability of two contrasting antipredator strategies, despite a highly similar phylogenetic history and selective regime. 16 pp., 3 figs, 6 tabs, gr. 8.…

Condizione: very_good. Gently read. May have name of previous ownership, or ex-library edition. Binding tight; spine straight and smooth, with no creasing; covers clean and crisp. Minimal signs of handling or shelving. 100% GUARANTEE! Shipped with delivery confirmation, if you're not satisfied with purchase please return item! Ships USPS Media Mail.…

Condizione: New. pp. 193.

Paperback. Condizione: Good. Secondhand book. Covers have ligjht discolouration and wear. Some wear down either side oif spine. Pages lightly tanned. Good book.

No Binding. Condizione: Very Good. A large facsimile of a lithographic view by De Loutherbourg, originally printed in 1805 for 'The Romantic and Picturesque Scenery of England and Wales', mounted (matted) and ready to frame. Engraved by William Pickett and coloured by John Clarke. This atmospheric view shows a small bridge over the millstream, with Moel Eilir and Mynydd Mawr in the background. De Loutherbourg, P J (illustratore).…

Paperback. Condizione: Brand New. 193 pages. 10.08x7.56x0.55 inches. In Stock.

Hardcover. Condizione: Very Good. A clean tight copy. Some edgewear to the boards and the spine. Previous owners signature to the first page. NEW EU 5 EURO CHARGE FOR IMPORTS IS INCLUDED IN OUR SHIPPING PRICE. ALL ITEMS ARE DISPATCHED FROM THE UK, ALL OVERSEAS ORDERS SENT BY TRACKABLE AIR MAIL. IF YOU ARE LOCATED OUTSIDE THE UK PLEASE ASK US FOR A POSTAGE QUOTE FOR MULTI VOLUME SETS BEFORE ORDERING.…

Condizione: New. In English.

Taschenbuch. Condizione: Neu. Druck auf Anfrage Neuware - Printed after ordering - Members of the gastropod family Littorinidae are common throughout the world. They form a very abundant component of many intertidal and shallow subtidal ecosystems and, by their grazing, often play a central role in shaping these communities. They also display a wide range of life history strategies and many are polymorphic, making them attractive model organisms for ecologists, evolutionary biologists and physiologists alike. Areas of particular interest include ecological interactions with other animals and with algae, the effects of pollutants and the use of littorinids as sentinel species for monitoring pollution, the effects of parasites on growth and ecology, taxonomy, and the study of genotypic/phenotypic responses to environmental factors. There is still much to be done, and the littorinids are proving to be an ideal group on which to work. Audience: Primarily targeted at the research level. Will also provide useful information for advanced first-degree students conducting research projects.…

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Condizione: New.

Couverture souple. Condizione: bon. RO60131245: 1925. In-12. Broché. Etat d'usage, Couv. convenable, Dos satisfaisant, Déchirures. 64 pages. Texte en français. Quelques taches dans les marges, n'altérant pas la lecture. . . . Classification Dewey : 820-Littératures anglaise et anglo-saxonne.