TY  - RPRT
TI  - Preliminary geologic map of the Denver 1? by 2? Quadrangle, north-central Colorado
AU  - Bruce Bryant
AU  - L.W. McGrew
AU  - Reinhard A. Wobus
PY  - 1978
DO  - 10.3133/ofr78397
UR  - https://pubs.usgs.gov/publication/ofr78397
ID  - ofr78397
ER  -