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Start Over You searched for: Author Interior Dept. Remove constraint Author: Interior Dept. Catalog Issue Year Decade 1970 - 1979 Remove constraint Catalog Issue Year Decade: 1970 - 1979 Sudoc Stem I 49.68 Remove constraint Sudoc Stem: I 49.68

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8. Technical papers. 66-67. Toxicity of some insecticides to 4 species of malacostracan crustaceans [with list of references], by Herman O. Sanders; Effects of water hardness on toxicity of several organic and inorganic herbicides to fish [with list of references], by Anthony Inglis and Edward L. Davis.