TY  - BOOK
AU  - Crawford,R.D.
TI  - A preliminary report on the geology of the Monarch mining district, Chaffee County, Colorado,
AV  - QE91 .A4 vol. 1
PY  - 1910///]
CY  - [Denver, Colo.
PB  - The Smith-Brooks printing company, state printers
KW  - Geology
KW  - Colorado
ER  -