Geology and ore deposits of the Summitville district, San Juan Mountains, Colorado,
Steven, Thomas August, 1917-
Geology and ore deposits of the Summitville district, San Juan Mountains, Colorado, by Thomas A. Steven and James C. Ratté. - Washington, U.S. Govt. Print. Off., 1960. - iv, 70 p. illus., maps (part col.) 30 cm.
Part of illustrative matter fold. in pocket. "Prepared in cooperation with the Colorado Metal Mining Fund Board."
Bibliography : p. 66-67.
gs 60000292
Geology--Colorado.
Petrology--Colorado.
Ore deposits--Colorado.
San Juan Mountains (Colo. and N.M.)
QE75 / .P9 no. 343
557.883
I 19.16:343
Geology and ore deposits of the Summitville district, San Juan Mountains, Colorado, by Thomas A. Steven and James C. Ratté. - Washington, U.S. Govt. Print. Off., 1960. - iv, 70 p. illus., maps (part col.) 30 cm.
Part of illustrative matter fold. in pocket. "Prepared in cooperation with the Colorado Metal Mining Fund Board."
Bibliography : p. 66-67.
gs 60000292
Geology--Colorado.
Petrology--Colorado.
Ore deposits--Colorado.
San Juan Mountains (Colo. and N.M.)
QE75 / .P9 no. 343
557.883
I 19.16:343