Placer mining on the Rogue River, Oregon, in its relation to the fish and fishing in that stream

Placer mining on the Rogue River, Oregon, in its relation to the fish and fishing in that stream Ward, Henry Baldwin 1865-1945 creator Swartley, Arthur M. 1870- Griffin, Lawrence Edmonds 1874- text bibliography oru Portland 1938] 1938 monographic eng 31 p. illus. 28 cm. by Henry Baldwin Ward. An ecological study made for the Oregon State Department of Geology and Mineral Industries, September 1937 - May 1938. Appendix A: "Extracts from report on Rogue River turbidity, by Arthur M. Swarthley": p. 26-27. Appendix B: "Experiments on tolerance of young trout and salmon for suspended sediment in water, by L. E. Griffen": p. 28-30. "Articles cited": p. 31. n-us-or Fisheries Oregon Rogue River Rogue River (Or.) Water Pollution QE155 .A3 no. 10 Oregon. State Dept. of Geology and Mineral Industries. Bulletin no. 10 gs 38000241 U. S. Geol. Survey. Libr. 780808 20260227111343.0 gs 38000241