TY  - RPRT
TI  - Geology of the McCalls Ferry-Quarryville district, Pennsylvania
AU  - Eleanora Frances Bliss Knopf
AU  - Anna Isabel Jonas
PY  - 1929
DO  - 10.3133/b799
UR  - https://pubs.usgs.gov/publication/b799
ID  - b799
ER  -