TY  - RPRT
TI  - Microfilmed well logs of the northern Appalachian basin
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1959
DO  - 10.3133/ofr59117
UR  - https://pubs.usgs.gov/publication/ofr59117
ID  - ofr59117
ER  -