Author: EMMONS, W.H. & F.C. CALKINS
Title: Geology and ore deposits of the Philipsburg Quadrangle, Montana.
Description: 1913. United States Geological Survey Prof. Pap. 78; 271 pp. 55 fig. 17 plts. h.t. (incl. 2 fold. & col. geol. and topogr. maps in pocket). Orig. wrps. spine a bit worn in two places, but otherwise very good, bindings tight, 4to.

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