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Start Over You searched for: Author Agricultural and Industrial Chemistry Bureau Remove constraint Author: Agricultural and Industrial Chemistry Bureau Publish Year Decade 1940 - 1949 Remove constraint Publish Year Decade: 1940 - 1949 Sudoc Stem A 1.9 Remove constraint Sudoc Stem: A 1.9

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3. Milk. Mechanical milk cooling on farms; [by J. R. McCalmont].

4. Concrete. Use of concrete on farm; [by T. A. H. Miller].