TY  - RPRT
TI  - Contour map of the bedrock surface, Mount Holyoke Quadrangle, Massachusetts
AU  - C.J. Londquist
PY  - 1975
DO  - 10.3133/mf640a
UR  - https://pubs.usgs.gov/publication/mf640A
ID  - mf640A
ER  -