Techniques for shipboard surveys of marine birds
By: by Patrick J. Gould and Douglas J. Forsell.
Contributors: Forsell, Douglas J.; U.S. Fish and Wildlife Service.
Series: Fish and wildlife technical report -- 25; Fish and wildlife technical report -- 25.
Publisher: U.S. Dept. of the Interior, Fish and Wildlife Service; National Technical Information Service [distributor]
Published: 1989
Place of publication: Washington, D.C; Springfield, VA
Subjects: Sea birds -- Counting.; Bird populations -- Estimates.