TY  - RPRT
TI  - A possible petroleum-related geochemical anomaly in surface rocks, Boulder and Weld counties, Colorado
AU  - Terrence J. Donovan
AU  - Raymond L. Noble
AU  - Irving Friedman
AU  - Jim D. Gleason
PY  - 1975
DO  - 10.3133/ofr7547
UR  - https://pubs.usgs.gov/publication/ofr7547
ID  - ofr7547
ER  -