TY  - RPRT
TI  - Preliminary engineering geologic map of the Morrison quadrangle, Jefferson County, Colorado
AU  - Howard E. Simpson
AU  - Stephen S. Hart
PY  - 1980
DO  - 10.3133/ofr80654
UR  - https://pubs.usgs.gov/publication/ofr80654
ID  - ofr80654
ER  -