Rich, Willis H. (Willis Horton), 1885-1972; Oregon. Fish Commission. Research Dept. (Salem, Or. : Department of Research, Fish Commission of the State of Oregon, 1941)
THE SALMON of the Columbia River have supported an intensive fishery for
over seventy years but are now showing unmistakable signs of depletion, and
various factors are contributing to the rapid progress of this condit ...
