Aids for bird students
By: prepared in the Division of Wildlife Research
Contributors: U.S. Fish and Wildlife Service
Edition: Rev. Dec. 1937.
Series: Wildlife research and management leaflet -- BS-2; Wildlife leaflet -- 2.
Publisher: U.S. Dept. of Agriculture, Bureau of Biological Survey
Published: 1937
Place of publication: Washington, D.C
Language: eng
Subjects: Birds; Bibliography; Ornithology; Study and teaching