TY  - RPRT
TI  - Guidebook for the Annual Field Conference of Pennsylvania Geologists: Geology in the region of the Delaware to Lehigh water gaps
AU  - Jack B. Epstein
AU  - Anita G. Epstein
PY  - 1967
UR  - https://pubs.usgs.gov/publication/70231177
ID  - 70231177
ER  -