Fish-passage research
Subtitle: review of progress, 1961-66
By: by Parker S. Trefethen.
Contributors: United States. Bureau of Commercial Fisheries.
Series: Circular -- 254.; Circular (U.S. Fish and Wildlife Service) -- 254.
Publisher: Bureau of Commercial Fisheries
Published: 1968
Place of publication: Washington
Language: eng
Number of pages: 24
Subjects: Fishways -- Research.; Dams.; Salmon.; Fishes -- Migration.