Pennak's Freshwater Invertebrates of the United States: Porifera to Crustacea

Completely revised and updated, this definitive reference source features a wealth of new knowledge on invertebrate animal phyla covered in the previous edition as well as fully modified sections on the preparation of materials. New features include: Current taxonomical arrangements of all freshwater invertebrate animals, excluding insects; Improved graphical treatments and keys to identification, several provided by specialists; Photographs and color plates to aid identification; More than 300 line drawings, many new to this edition; and Taxonomic keys carried uniformly to genus level in all but two phyla, with frequent references to species.

"The 4th Edition Continues to be an excellent treatise about the adaptation of invertebrates to freshwater environments." (Journal of the North American Benthological Society, June 2002)

."..The book is beautifully produced, will be a boon to North American users, and a means of broadening the knowledge of students everywhere." (The Naturalist)

"Such a practical writing style makes the book easy to use and a perfect, one of its kind, laboratory manual." ("Quarterly Review of Biology", September 2002)