Dyfyniad APA

Luepke, G. (1985). Economic analysis of heavy minerals in sediments. Van Nostrand Reinhold Company.

Dyfyniad Arddull Chicago

Luepke, Gretchen. Economic Analysis of Heavy Minerals in Sediments. New York: Van Nostrand Reinhold Company, 1985.

Dyfyniad MLA

Luepke, Gretchen. Economic Analysis of Heavy Minerals in Sediments. Van Nostrand Reinhold Company, 1985.

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