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Start Over You searched for: Catalog Issue Year Decade 1970 - 1979 Remove constraint Catalog Issue Year Decade: 1970 - 1979 Sudoc Stem I 67.13/4 Remove constraint Sudoc Stem: I 67.13/4

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95. water pollution control research series. ORD-1. Joint municipal and semichemical pulping waste treatment, pilot plant study evaluating combine treatment of domestic and weak semichemical pulping and papermaking wastes [with list of references]; by City of Erie, Pa., and Hammermill Paper Co.