Conservation notes
Subtitle: protecting our endangered birds.
Series: Circular -- 61; Circular (U.S. Fish and Wildlife Service) -- 61
Publisher: U.S. Dept. of the Interior, Fish and Wildlife Service
Published: 1959
Place of publication: Washington
Language: eng
Subjects: Endangered species -- United States; Rare birds -- United States; Wildlife conservation -- United States
Other titles: Protecting our endangered birds
Notes: Caption title.

"December 1959." -- P. [6].