Ashley, George H. (George Hall), Barnett, Victor H., Bauer, Clyde Max., Bowen, C.F. (Charles F.), Butts, Charles., Campbell, Marius R. (Marius Robinson), Clark, Frank R. (Frank Rinker), Condit, D. Dale (Daniel Dale), Greene, F.C., Hewett, D.F. (Donnell Foster), Lesher, C.E. (Carl Eugene), Lloyd, E. Russell., Lupton, Charles T., Pack, Robert W. (Robert Wallace), Richardson, G.B. (George Burr), Rogers, G. Sherburne (Gaillard Sherburne), Shaw, E.W. (Eugene Wesley), Smith, C.D., Wegemann, Carroll H.Woodruff, E.G. (Elmer Grant. (Eds.) (191) Contributions to economic geology (short papers and preliminary reports), 1912. Part II. -- Mineral fuels. Marius R. Campbell, geologist in charge. [U.S. Geological Survey Bulletin 541.]Washington, DC,MLA Citation
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