A monograph of the fresh-water polyzoa : including all the known species, both British and foreign /
Allman, George James, 1812-1898.
A monograph of the fresh-water polyzoa : including all the known species, both British and foreign / by Georges James Allman. - London : Ray Society, 1856. - VIII, 119 p. : ill. ; 36 cm.
Dedication dated: May 2, 1857.
A monograph of the fresh-water polyzoa : including all the known species, both British and foreign / by Georges James Allman. - London : Ray Society, 1856. - VIII, 119 p. : ill. ; 36 cm.
Dedication dated: May 2, 1857.