Dyfyniad APA

CUMMINS, A. B. Sosiety of mining engineering (SME) handbook. Volume I. Society of Mining Engineers.

Dyfyniad Arddull Chicago

CUMMINS, Arthur B. Sosiety of Mining Engineering (SME) Handbook. Volume I. Society of Mining Engineers.

Dyfyniad MLA

CUMMINS, Arthur B. Sosiety of Mining Engineering (SME) Handbook. Volume I. Society of Mining Engineers.

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