Harry B. Tracy

Subjects

Fisheries, Oil spills, Spruce budworm, Aquatic animals, Control, DDT (Insecticide), Douglas fir tussock moth, Ecology, Economic aspects, Economic aspects of Fisheries, Economic aspects of Freshwater fishes, Economic aspects of Pollution, Effect of insecticides on, Effect of water pollution on, Environmental aspects, Environmental aspects of DDT (Insecticide), Environmental aspects of Fenitrothion, Environmental policy, Evaluation, Fenitrothion, Fish hatcheries, Fish kills, Fishery policy, Freshwater fishes, Handbooks, manuals

Places

Washington (State), Columbia River, Puget Sound