TY  - RPRT
TI  - Economic geology of Gilpin County and adjacent parts of Clear Creek and Boulder Counties, Colorado
AU  - E.S. Bastin
AU  - J. M. Hill
PY  - 1917
DO  - 10.3133/pp94
UR  - https://pubs.usgs.gov/publication/pp94
ID  - pp94
ER  -