Sponges; Poriferae

by C. Maynard

The porifera and coelentera

by Edward Alfred Minchin

Porifera and Coelentera

by Gilbert C. 1861-1933 Bourne, G. Herbert 1861-1940 Fowler

Porifera, revised

by J. Keith Rigby

Systema Porifera

by John N. A. Hooper, R. W. M. van Soest

Marine Porifera in which the mineral skeleton is composed entirely of calcium carbonate.

Sponges (Porifera)

by Werner E. G. Müller

Sponges Poriferae

by Charles Johnson Maynard

An Introduction to Porifera

by H.S. Bhamrah, Kavita Juneja

Systema Porifera

by John N.A. Hooper, Rob W.M. van Soest

Protozoa

by Marcus Manuel Hartog

A text book of invertebrate zoology

by Trilok Chandra Majupuria

Treatise on invertebrate paleontology

by J. Keith Rigby

Porifera : Tetraxonia, aus : das Tierreich

by Robert von Lendenfeld, Heinz Wermuth

Gąbki (Porifera)

by Kazimierz Simm

Gubki

Sponges Poriferae

by C. J. Maynard

Porifera research

by International Sponge Symposium (7th 2006 Armação dos Búzios, Brazil)

Taxonomy of Porifera

by Jean Vacelet

Sponges

by C. Maynard

Archaeocyatha and Porifera