TY  - RPRT
TI  - Selected bibliography, index to geologic mapping, and preliminary compilation of bedrock geology: Boston two-degree sheet
AU  - John D. Peper
PY  - 1978
DO  - 10.3133/ofr78370
UR  - https://pubs.usgs.gov/publication/ofr78370
ID  - ofr78370
ER  -