TY  - RPRT
TI  - Preliminary surficial geologic map of the Collinsville quadrangle, Litchfield and Hartford Counties, Connecticut
AU  - Roger B. Colton
PY  - 1970
DO  - 10.3133/ofr7087
UR  - https://pubs.usgs.gov/publication/ofr7087
ID  - ofr7087
ER  -