Animals without backbones : an introduction to the invertebrates /
Buchsbaum, Ralph,1907-
Parker, N. B.,former owner.StEdNL
Harmondsworth : Penguin Books,
1951.
Includes index.
Previous ed.: Chicago, Ill. : University of Chicago Press, 1948.
Vol. 2 published: Melbourne, Vic. ; London : Penguin Books, 1951 (Reprinted, 1953)
Ink inscription on front paste-down endpaper: N. Parker, 1953, K.G.L.
Invertebrates.