Richards, R. H., Locke, C. E., & Schuhmann, R. (1940). Textbook of ore dressing (3d, completely rev. and rewritten.). New York and London: McGraw-Hill Book Company, inc..
Παραπομπή Chicago StyleRichards, Robert Hallowell, Charles E. Locke, and Reinhardt Schuhmann. Textbook of Ore Dressing. 3d, completely rev. and rewritten. New York and London: McGraw-Hill Book Company, inc., 1940.
Παραπομπή MLARichards, Robert Hallowell, Charles E. Locke, and Reinhardt Schuhmann. Textbook of Ore Dressing. 3d, completely rev. and rewritten. New York and London: McGraw-Hill Book Company, inc., 1940.
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