Evolution of the Annelida, Onychophora, and Arthropoda
By: by R.E. Snodgrass.
Series: Smithsonian miscellaneous collections -- v. 97, no. 6; Publication -- 3483; Publication (Smithsonian Institution) -- 3483.
Publisher: Smithsonian Institution
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 159
Subjects: Annelida.; Onychophora.; Arthropoda.
Other titles: Annelida, Onychophora, and Arthropoda
Notes: "August 23, 1938."

Includes bibliographical references (p. 149-159).