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

Freshwater Sponges, Hydroids & Polyzoa

A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges by W. Saville Kent, 3 vol.

1

A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges by W. Saville Kent, 3 vol.

3

A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges by W. Saville Kent, 3 vol.

2

Annotated bibliography of Lower Paleozoic sponges of North America / [by] J. Keith Rigby -- and Matthew H. Nitecki --.

v.18:no.1(1968)

The sponges / by Robert von Lendenfeld.

v.42 (1915) text