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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