Needham, Paul R.
Trout streams; conditions that determine their productivity and suggestions for stream and lake management, - San Francisco, Holden-Day [1969] - x, 241 p. illus. 24 cm.
Trout.
Fishery management.
639 HOL 1969 A107 Or.
Trout streams; conditions that determine their productivity and suggestions for stream and lake management, - San Francisco, Holden-Day [1969] - x, 241 p. illus. 24 cm.
Trout.
Fishery management.
639 HOL 1969 A107 Or.