Eschner a r (3 résultats)

Pamphlet. Etat : Very Good. Vol 67, No 6, pp. 2433-2445, Illus, Extracted from orig vol, begins with title page, trimmed & stapled, thus is like a pamphlet, paper wrinkled at bottom else VG.

Paperback. Etat : New. Print on Demand. This book studies the effects of forest treatments on streamflow and water quality. Four watersheds were monitored for six years before undergoing logging with different methods. The results show that cutting vegetation increases streamflow, with the amount of increase proportional to the severity of the cut. The study also found that poorly planned logging can cause water pollution, but most of the damage to water quality can be avoided by proper planning and care. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

The Natural History Museum in Vienna hosts the samples of the late 19th century Austro-Hungarian ?Pola? expeditions to the Eastern Mediterranean and the Red Sea. Rudolf Sturany studied these samples and described several new species. The type material of 35 species and forms of gastropods collected in the Red Sea is listed and illustrated. For each species, the available type material is listed, we provide the original description and a translation into English is provided, and the current taxonomic status of the species is commented upon whenever possible. All species are illustrated in colour and with SEM imaging, with the exception of Stylifer thielei, whose only specimen was broken by Johannes Thiele in Berlin to study the soft parts. Finally, a table of the Pola deep and coastal stations where molluscs were collected is provided, with modern names. 50 pp., 33 figs, 4.…