The white-necked raven in relation to agriculture
By: by Shaler E. Aldous.
Series: U.S. Fish and wildlife service.  Research report 5
Publisher: U.S. Govt. Print. Off.
Published: 1942
Place of publication: Washington
Language: eng
Number of pages: 56
Subjects: Ravens.
Notes: "Literature cited": p. 55-56.
At head of title: United States Dept. of the Interior, Harold L. Ickes, secretary.  Fish and wildlife service, Ira N. Gabrielson, director ...