
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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