TY  - RPRT
TI  - Bedrock and surficial engineering geologic maps of the Littleton Quadrangle, Jefferson, Douglas, and Arapahoe counties, Colorado
AU  - Edward E. McGregor
AU  - John T. McDonough
PY  - 1980
DO  - 10.3133/ofr80321
UR  - https://pubs.usgs.gov/publication/ofr80321
ID  - ofr80321
ER  -