A guide to freshwater invertebrate animals. מאת Macan, Thomas T.

Guide to the reptiles, amphibians and freshwater fishes of Florida מאת Carr, Archie Fairly

Fresh-water biology מאת Ward, Henry Baldwin, 1865-

Freshwater biology

Freshwater biology

Common freshwater fishes of East Africa מאת Copley, Hugh

A manual of aquatic plants. מאת Fassett, Norman Carter 1900-

Table of contents only

How to know the freshwater fishes pictured keys for identifying all of the freshwater fishes of the United States, and also including a number of marine species which often enter f... מאת Eddy, Samuel, 1897-

A manual of aquatic plants. מאת Fassett, Norman C. (Norman Carter) 1900-1954

Freshwater fishery biology מאת Lagler, Karl Frank, 1912-