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TN312 .C6 |
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2.
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Monroeville, Pa. : Bituminous Coal Research, 1978.
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3.
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[Washington] : Dept. of the Interior, Bureau of Mines, 1979.
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4.
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Cardiff, Wales : University of Wales Press, 2014. ©2014
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5.
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[Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1995]
I 28.23: 9548 |
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6.
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Washington : U.S. Dept. of Commerce, National Bureau of Standards, 1979.
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7.
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Minneapolis, Minn. : Donaldson Co., 1979.
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8.
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[Washington] : Dept. of the Interior, Bureau of Mines, 1979.
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9.
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Waltham, Mass. : The Associates, 1977.
TN23 .U44 1978-14 |
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10.
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[Washington] : Dept. of the Interior, Bureau of Mines, 1977.
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