STEP survey projects
Subtitle: a look at fish and streams
By: Salmon Trout Enhancement Program, Oregon Department of Fish and Wildlife.
Contributors: Oregon. Salmon Trout Enhancement Program.
Series: STEP; STEP
Publisher: The Program
Published: 1990
Place of publication: [Portland, Or.]
Language: eng
Subjects: Fish populations -- Oregon.; Stream ecology -- Oregon.
Other titles: A look at fish and streams.
Notes: Title from caption.