TY  - RPRT
TI  - Contour map of the bedrock surface, Middletown Quadrangle, Connecticut
AU  - J.W. Bingham
PY  - 1976
DO  - 10.3133/mf639b
UR  - https://pubs.usgs.gov/publication/mf639B
ID  - mf639B
ER  -