TY  - RPRT
TI  - Gamma-ray, magnetic, and topographic data for parts of the Colorado Front Range
AU  - Joseph S. Duval
AU  - J. C. Reed
AU  - Isidore Zietz
PY  - 2001
DO  - 10.3133/ofr00331
UR  - https://pubs.usgs.gov/publication/ofr00331
ID  - ofr00331
ER  -