TY  - RPRT
TI  - Mineral resources of the Indian Peaks study area, Boulder and Grand Counties, Colorado
AU  - Robert Carl Pearson
AU  - Charles N. Speltz
AU  - Gordon Johnson
PY  - 1975
DO  - 10.3133/ofr75500
UR  - https://pubs.usgs.gov/publication/ofr75500
ID  - ofr75500
ER  -