The rattlesnakes, genera Sistrurus and Crotalus.
Subtitle: A study in zoogeography and evolution.
Series: Chicago Academy of Sciences. Special publication; no. 4; Special publication (Chicago Academy of Sciences) ;; no. 4.
Published: 1940
Place of publication: Chicago
Language: eng
Number of pages: 266
Subjects: Rattlesnakes.; Zoogeography.; Evolution.
Notes: Bibliography: p. 250-266.
Thesis--Univ. of Michigan.
Without thesis statement.