Fish migration and fish passage
Subtitle: a practical guide to solving fish passage problems
By: prepared by Willis A. Evans ; in collaboration with F. Beryl Johnston.
Contributors: Johnston, F. Beryl.; United States. Forest Service. California Region.
Edition: Rev.
Publisher: USDA Forest Service, Region 5
Published: 1974
Place of publication: [s.l.]
Language: eng
Number of pages: 80
Subjects: Fishes -- Migration.; Fishways -- Design and construction.