Flawn, P. T. (1966). Mineral resources: Geology, engineering, economics, politics, law. Rand McNally.
Citace podle Chicago (17th ed.)Flawn, Peter Tyrell. Mineral Resources: Geology, Engineering, Economics, Politics, Law. Chicago: Rand McNally, 1966.
Citace podle MLA (9th ed.)Flawn, Peter Tyrell. Mineral Resources: Geology, Engineering, Economics, Politics, Law. Rand McNally, 1966.
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