TY  - RPRT
TI  - Contour map of the bedrock surface, Greenfield Quadrangle, Massachusetts
AU  - C.J. Londquist
AU  - B. P. Hansen
PY  - 1974
DO  - 10.3133/mf629a
UR  - https://pubs.usgs.gov/publication/mf629A
ID  - mf629A
ER  -