TY  - RPRT
TI  - Preliminary geologic map and lignite deposits of the Strasburg NW Quadrangle, Arapahoe and Adams counties, Colorado
AU  - P.E. Soister
PY  - 1972
DO  - 10.3133/ofr72353
UR  - https://pubs.usgs.gov/publication/ofr72353
ID  - ofr72353
ER  -