TY  - RPRT
TI  - Denver Basin exploration intensity map, Colorado, Nebraska, and Wyoming
AU  - Debra K. Higley
AU  - R. F. Mast
AU  - Donald L. Gautier
PY  - 1987
DO  - 10.3133/ofr8725
UR  - https://pubs.usgs.gov/publication/ofr8725
ID  - ofr8725
ER  -