The British freshwater Rhizopoda and Heliozoa / by James Cash, assisted by John Hopkinson.

3

The British freshwater Rhizopoda and Heliozoa / by James Cash, assisted by John Hopkinson.

4

The British freshwater Rhizopoda and Heliozoa / by James Cash, assisted by John Hopkinson.

2

Freshwater sponges, hydroids & Polyzoa. By N. Annandale.

Freshwater Sponges, Hydroids & Polyzoa

The British freshwater Rhizopoda and Heliozoa / by James Cash, assisted by John Hopkinson.

5

The planktonic freshwater species of Microcystis, by Francis Drouet ... and William A. Daily.

v.20:no.3(1939)

The importance of catfish burrows in maintaining fish populations of tropical freshwater streams in western Ecuador / Garrett S. Glodek.

v.73:no.1(1978)

Phylogeny and paedomorphosis in an African family of freshwater fishes (Gonorhynchiformes: Kneriidae) / Terry Grande.

n.s. no.78(1994)