TY  - RPRT
TI  - Proterozoic gold, silver, copper, lead, zinc, and tungsten deposits and occurrences in Colorado, an experimental publication on 5 1/4 inch disk for microcomputers that use the DOS operating system
AU  - R. B. Taylor
AU  - D. M. Sheridan
AU  - G.I. Selner
PY  - 1987
DO  - 10.3133/ofr8799
UR  - https://pubs.usgs.gov/publication/ofr8799
ID  - ofr8799
ER  -