TY  - BOOK
AU  - Loughlin,G.F.
TI  - Guides to ore in the Leadville district, Colorado,
T2  - U.S. Geological survey.  Bulletin 779
AV  - QE75 .B9 no. 779
PY  - 1926///
CY  - Washington
PB  - Govt. print. off.
KW  - Ores
KW  - Colorado
KW  - Leadville
KW  - Ore deposits
N1  - At head of title: Department of the interior
ER  -