TY  - RPRT
TI  - Map showing localities and amounts of metallic mineral production in Colorado
AU  - William R. Marsh
AU  - Roberta W. Queen
PY  - 1973
DO  - 10.3133/ofr73178
UR  - https://pubs.usgs.gov/publication/ofr73178
ID  - ofr73178
ER  -