Ecology and Classification of North American Freshwater Invertebrates by Thorp

Invertebrates by Brusca

The Battle of the Beams: The secret scie... by Whipple, Tom Paperback / softback

The Fundamentals of Political Scie... by Kellstedt, Paul M. Paperback / softback

Fossil Invertebrates

Ecology and Classification of North American Freshwater Invertebrates by Alan P.

Fossil Invertebrates by Boardman, R.; Cheetham, A.; Rowell, A.

Invertebrates by Richard Brusca & Gary J. Brusca Hardcover