Browsing Oregon Fish Commission Contributions by Author "Oregon. Fish Commission. Research Dept."

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The present state of the Columbia River salmon resources

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 ...