TY  - RPRT
TI  - Teachers guide to geologic trails in Delaware Water Gap National Recreation Area, Pennsylvania–New Jersey
AU  - Jack B. Epstein
PY  - 2010
DO  - 10.1130/2010.0016(06)
UR  - https://pubs.usgs.gov/publication/70207714
ID  - 70207714
ER  -