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Start Over You searched for: Author Mines Bureau Remove constraint Author: Mines Bureau Publish Year Decade 1960 - 1969 Remove constraint Publish Year Decade: 1960 - 1969

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1935. Ferroalloys; by Gilbert L. DeHuff.

1938. Gem stones; by Benjamin Petkof.

1939. Gold; by J. P. Ryan.

1940. Graphite; by Harold J. Drake.