Trends in duck breeding populations, 1955-1990
By: F.A. Johnson ... [et. al]
Contributors: U.S. Fish and Wildlife Service. Office of Migratory Bird Management
Publisher: Dept. of the Interior, U.S. Fish and Wildlife Service, Office of Migratory Bird Management
Published: 1990
Place of publication: Laurel, MD
Language: eng
Format: Microform
Number of pages: 11
Subjects: Ducks -- Counting -- United States; Bird populations -- United States
Notes: Caption title

Distributed to depository libraries in microfiche

Shipping list no.: 92-2478-M

"Administrative report - July 6, 1990."

Microfiche. [Washington, D.C.?] : Supt. of Docs., U.S. G.P.O., [1992] 1 microfiche : negative

s 1992 dcu n b