Title: Pennak's Freshwater Invertebrates of the United States
Description: "Pennak's Freshwater Invertebrates of the United States, Fourth Edition is an indispensable resource for biologists, ecologists, graduate students, and anyone who needs to acquire the thorough knowledge of aquatic invertebrates that is essential to understanding the community structure of freshwater environments."--BOOK JACKET.
Subjects: Freshwater invertebrates, Freshwater animals