TY  - RPRT
TI  - Aeromagnetic map of the Black Ridge Canyon area, western Colorado
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1987
DO  - 10.3133/ofr87337
UR  - https://pubs.usgs.gov/publication/ofr87337
ID  - ofr87337
ER  -