Seventh progress report
Subtitle: fish passage development and evaluation program 1984-1990
By: prepared by US Army Corps of Engineers, North Pacific Division, Environmental Resources Division.
Publisher: The Division
Published: 1993
Place of publication: [Portland, Or.]
Language: eng
Number of pages: 403
Subjects: Fishways -- Northwest, Pacific; Fishes -- Migration -- Northwest, Pacific; Fisheries -- Research -- Northwest, Pacific
Other titles: Fish passage development and evaluation program 1984-1990.
Notes: Cover title.

"July 1993."

Includes bibliographical references.