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The mineral position of the United States and the outlook for the future
Pehrson, Elmer W. - In: Annual report of the Board of Regents of the … (1945), pp. 175-199
Persistent link: https://www.econbiz.de/10002624750
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Minerals in national and international affairs
Pehrson, Elmer W. - In: Economics of the mineral industries : a series of …, (pp. 497-544). 1959
Persistent link: https://www.econbiz.de/10002624757
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Minerals in national and international affairs
Pehrson, Elmer W. - In: Economics of the mineral industries. A series of …, (pp. 511-560). 1964
Persistent link: https://www.econbiz.de/10002624761