Geology and ore deposits of the Philipsburg quadrangle, Montana Emmons, William H. (William Harvey) 1876- creator Calkins, Frank Cathcart, 1878- editor text dcu Washington U.S. Gov't. Print. Off 1913 monographic eng
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271 p. : ill., plates, maps (in pocket), diagrs. ; 29 cm. by William Harvey Emmons and Frank Cathcart Calkins. Bibliography: p. 24-26. Geology Montana Mines and mineral resources Montana QE75 .P9 no. 78 I 19.16:78 I 19.16:78 Geological Survey professional paper ; no. 78 gs 13000474 DLC 790220 20260227111314.0 gs 13000474