Aerial surveys of waterbirds in Alaska, 1957-94
Subtitle: population trends and observer variability
By: by John I. Hodges ... [et al.].
Contributors: Hodges, John I.; United States. National Biological Service.
Series: Information and technology report,; 4
Publisher: U.S. Dept. of the Interior, National Biological Service; May be obtained from the U.S. Geological Survey, Information Services; May be purchased from the National Technical Information Service
Published: 1996
Place of publication: [Washington, D.C.]; Denver, CO; Springfield, Va
Language: eng
Number of pages: 24
Subjects: Anatidae -- Alaska.; Bird populations -- Alaska.; Aerial surveys in wildlife management -- Alaska.; Bird surveys -- Alaska.
Notes: Bibliographical references on p. 18 and continues on p. 24; no refs. between p. 19 and 23.
Includes bibliographical references (p. 18-24).
"August 1996."