The Invertebrates : Six Volume Set. Vol. I : Protozoa Through Ctenophora; Vol. II : Platyhelminthes and Rhynchoecoela; Vol. III : Acanthocephala Aschelminthes and Entoprocta; Vol. IV : Echinodermata; Vol. V
Subtitle: Smaller, Coelomate Groups; Vol. VI. Mollusca;
Publisher: McGraw Hill
Published: 1940-01-01