A regional structural model for gold mineralization in the southern part of the Archean Superior province, United States / by P.K. Sims and W.C. Day (U.S. Geological Survey bulletin ; 1904) (Contribution to Precambrian geology of Lake Superior region ; ch. M)
A regional structural model for gold mineralization in the southern part of the Archean Superior province, United States / by P.K. Sims and W.C. Day
(U.S. Geological Survey bulletin ; 1904) (Contribution to Precambrian geology of Lake Superior region ; ch. M)