Coal fields of Grand Mesa and the West Elk Mountains, Colorado,
Lee, Willis T. 1864-1926.
Coal fields of Grand Mesa and the West Elk Mountains, Colorado, by Willis T. Lee. - Washington, Government print. off., 1912. - 237 p. illus., plates, map (in pocket) diagrs. 24 cm. - U.S. Geological survey. Bulletin 510 .
At head of title: Department of the Interior. Title vignette.
gs 12000336
Coal mines and mining--Colorado.
Coal--Colorado.
QE75 / .B9 no. 510
Coal fields of Grand Mesa and the West Elk Mountains, Colorado, by Willis T. Lee. - Washington, Government print. off., 1912. - 237 p. illus., plates, map (in pocket) diagrs. 24 cm. - U.S. Geological survey. Bulletin 510 .
At head of title: Department of the Interior. Title vignette.
gs 12000336
Coal mines and mining--Colorado.
Coal--Colorado.
QE75 / .B9 no. 510