TY  - RPRT
TI  - Field trip guidebook; the anthracite basins of eastern Pennsylvania
AU  - J.R. Levine
AU  - J.R. Eggleston
PY  - 1992
DO  - 10.3133/ofr92568
UR  - https://pubs.usgs.gov/publication/ofr92568
ID  - ofr92568
ER  -