Spengler h a (4 resultados)

gebundene Ausgabe. Condición: Gut. 157 Seiten; Das hier angebotene Buch stammt aus einer teilaufgelösten Bibliothek und kann die entsprechenden Kennzeichnungen aufweisen (Rückenschild, Instituts-Stempel.); der Buchzustand ist ansonsten ordentlich und dem Alter entsprechend gut. In ENGLISCHER Sprache. Sprache: Englisch Gewicht in Gramm: 335.…

Condición: VG. Philadelphia 1951 first edition. vol 95 no 1. 4to wraps. Complete issue paginated pp. 1-91. Includes: Population Trends in Densely Populated Areas; Chlorella as a Source of Food ; Production of Nutritive Substances from Inedible Carbohydrates; Aquatic Resources for World Food Needs, etc. VG no owner marks. …

The osphradium is larger and more complex in Conus, a large and taxonomically difficult genus, than in other prosobranch gastropods. We examined intra- and interspecific variation in external anatomical characters of this major chemoreceptor organ, how these relate to ecological characteristics, and the potential of the osphradium to aid taxonomic differentiation, among 22 species of Conus. Six quantitative characters convey the main features of the Conus osphradium: its area, width-length ratio, curvature, orientation relative to the animal s anterior-posterior axis, density of sensory leaflets, and number of digitiform ridges on sensory leaflets. Species in 85% of pairwise comparisons differed significantly with respect to at least one variable. Multivariate discriminant function analysis successfully differentiated other species. Osphradium size relative to body size varied significantly with habitat type, and number of digitiform ridges varied with food type, but other characters were independent of ecological attributes and may potentially be useful in phylogenetic reconstruction. 15 pp., 6 figs, 4 tabs, gr. 8.…

Decorative Cloth. Condición: Fine. Not Issued. 1st Edition. Green cloth, lettered/illus. in gold foil. Slight rubbing at heel of spine and very slight shelf wear, virtually as issued. iii,284 pp., illus. w/ b&w photographs. An exceptional community history, and quite scarce. Size: 4to - over 9¾" - 12" tall. Book. …