Cita APA

Pratt, W. P. (1995). The Midcontinent strategic and critical minerals project. US Geological Survey circular 1124.

Citación estilo Chicago

Pratt, Walden P. "The Midcontinent Strategic and Critical Minerals Project." US Geological Survey Circular 1124 1995.

Cita MLA

Pratt, Walden P. "The Midcontinent Strategic and Critical Minerals Project." US Geological Survey Circular 1124 1995.

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