A model of the productivity of the northern pintail
By: by Johan D. Carlson, Jr., William R. Clark, and Erwin E. Klaas.
Contributors: Clark, William R. 1949-; Klaas, Erwin E.
Series: Biological report,; 7; Biological report (Washington, D.C.) ;; 7.
Publisher: U.S. Dept. of the Interior, Fish and Wildlife Service; May be purchased from National Technical Information Service
Published: 1993
Place of publication: Washington, D.C; Springfield, VA
Language: eng
Number of pages: 20
Subjects: Northern pintail -- Reproduction -- Mathematical models.
Notes: Includes bibliographical references (p. 14-15).
"February 1993."