TY  - RPRT
TI  - Geology of the Wood and East Calhoun mines, Central City District, Gilpin County, Colorado
AU  - Avery Ala Drake
PY  - 1955
DO  - 10.3133/tei175
UR  - https://pubs.usgs.gov/publication/tei175
ID  - tei175
ER  -