TY  - RPRT
TI  - Contour map of the bedrock surface, Mount Toby Quadrangle, Massachusetts
AU  - C.J. Londquist
PY  - 1974
DO  - 10.3133/mf621a
UR  - https://pubs.usgs.gov/publication/mf621A
ID  - mf621A
ER  -