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1Published 1918Subjects: “...United States. Bureau of Mines. http://id.loc.gov/authorities/names/n79063444...”
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2Published 1912Subjects: “...Bibliography. http://id.loc.gov/authorities/subjects/sh85013838...”
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3Published 1912Subjects: “...Animal experimentation. http://id.loc.gov/authorities/subjects/sh85005173...”
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4Published 1912Subjects: “...Coal mines and mining. http://id.loc.gov/authorities/subjects/sh85027364...”
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5Published 1913Subjects: “...Gases. http://id.loc.gov/authorities/subjects/sh85053380...”
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6Published 1912Subjects: “...Fire prevention. http://id.loc.gov/authorities/subjects/sh85048509...”
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7Published 1913Subjects: “...Coal mines and mining. http://id.loc.gov/authorities/subjects/sh85027364...”
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8Published 1911Subjects: “...Natural gas. http://id.loc.gov/authorities/subjects/sh85053223...”
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Government Document eBook