Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado,
Spurr, Josiah Edward, 1870-1950.
Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado, by Josiah E. Spurr and George H. Garrey: with general geology, by Sydney H. Ball. - Washington, Govt. Print. Off., 1908. - 422 p. illus., LXXXVII pl. (part fold., incl. maps, plans) diagrs. 29 x 23 cm.
Four folded plates, including 2 maps, in pocket.
gs 09000056
Mines and mineral resources--Colorado.
Geology--Colorado.
TN24.C6 / S8 no. 63
557.3
Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado, by Josiah E. Spurr and George H. Garrey: with general geology, by Sydney H. Ball. - Washington, Govt. Print. Off., 1908. - 422 p. illus., LXXXVII pl. (part fold., incl. maps, plans) diagrs. 29 x 23 cm.
Four folded plates, including 2 maps, in pocket.
gs 09000056
Mines and mineral resources--Colorado.
Geology--Colorado.
TN24.C6 / S8 no. 63
557.3