TY  - RPRT
TI  - Contour map of the bedrock surface, Hampden quadrangle, Massachusetts–Connecticut
AU  - C.J. Londquist
PY  - 1973
DO  - 10.3133/mf486a
UR  - https://pubs.usgs.gov/publication/mf486A
ID  - mf486A
ER  -