
Fred A. Donath, Francis A. Stehli, George W. Wetherill, Editors

Fred A. Donath, Francis A. Stehli, and George W. Wetherill, Editors




P. M. D. Bradshaw, Editor


Alexander Conrad Winchell


Svenska Gruvforeningen & Jernkontoret

Donald M. Hausen and Won C. Park, Editors

Richard D.Hagni, Editors



Ronald K. Sorem and Ronald H. Fewkes







P. Parrish and A. Ogilvie
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