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Coal reserves of Pennsylvania : total, recoverable, and strippable (January 1, 1970)
Edmunds, William E. - 1972
Persistent link: https://www.econbiz.de/10000323810
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Coal
Broderick, Grace N. (contributor) - United States / Bureau of Mines - 1969
Persistent link: https://www.econbiz.de/10003251794
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Supply and demand for energy in the United States by States and regions, 1960 and 1965
Broderick, Grace N. (contributor) - United States / Bureau of Mines - 1969
Persistent link: https://www.econbiz.de/10000325619
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Petroleum and natural gas liquids
Broderick, Grace N. (contributor);  … - United States / Bureau of Mines - 1969
Persistent link: https://www.econbiz.de/10003251811