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Start Over You searched for: Author Mines Bureau Remove constraint Author: Mines Bureau Publish Year Decade 1950 - 1959 Remove constraint Publish Year Decade: 1950 - 1959

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3474. Feldspar; by Robert W. Metcalf.

3475. Ferro-alloys; by Norwood B. Melcher.

3476. Ferro-alloys; by Norwood B. Melcher.