TY  - RPRT
TI  - Distribution of silver and copper in placer gold derived from the northeastern part of the Colorado Mineral Belt
AU  - George A. Desborough
AU  - William H. Raymond
AU  - Paula J. Iagmin
PY  - 1970
DO  - 10.2113/gsecongeo.65.8.937
UR  - https://pubs.usgs.gov/publication/70226166
ID  - 70226166
ER  -