key to the snakes of the United States, Canada, and Lower California
Publisher: Univ. of Michigan Press
Published: 1939
Place of publication: Ann Arbor
Language: eng
Number of pages: 65
Subjects: Snakes -- North America
Notes: Reprinted from "Papers of the Michigan Academy of Science, Arts, and Letters," vol. IV, pt. II

Third printing by lithoprint, 1947