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Start Over You searched for: Publish Year Decade 1970 - 1979 Remove constraint Publish Year Decade: 1970 - 1979 Catalog Issue Year Decade 1970 - 1979 Remove constraint Catalog Issue Year Decade: 1970 - 1979

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941. Tungsten in 1975.

942. Abrasive materials in 1975.

943. Asbestos in 1975.

944. Barite in 1975.

945. Boron in 1975.

946. Bromine in 1975.

947. Chromium in 1975.

948. Clays in 1975.

949. Cobalt in 1975.

950. Columbium and tantalum in 1975.