TY  - RPRT
TI  - Preliminary bedrock geologic map of the Ludlow Quadrangle, Massachusetts
AU  - G. W. Leo
AU  - Peter Robinson
AU  - J. D. Peper
AU  - D.J. Hall
PY  - 1974
DO  - 10.3133/ofr74102
UR  - https://pubs.usgs.gov/publication/ofr74102
ID  - ofr74102
ER  -