TY  - RPRT
TI  - Descriptions of four measured outcrop sections of Upper Devonian and Lower Mississippian strata in Warren and Elk counties, Pennsylvania
AU  - S. P. Schweinfurth
AU  - M.A. Person
AU  - N. L. Hickling
PY  - 1982
DO  - 10.3133/ofr82133
UR  - https://pubs.usgs.gov/publication/ofr82133
ID  - ofr82133
ER  -