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Start Over You searched for: Publish Year Decade 1930 - 1939 Remove constraint Publish Year Decade: 1930 - 1939 Sudoc Stem I 28.37/a Remove constraint Sudoc Stem: I 28.37/a

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136. Tin; by R. B. Miller.

137. Zinc; by Elmer W. Pehrson.

138. Abrasive materials; by A. E. Davis.