TY  - RPRT
TI  - Locations and descriptions of mineralized rock samples from Mississippi Valley-type lead-zinc occurrences in central Pennsylvania
AU  - S. S. Howe
PY  - 1988
DO  - 10.3133/ofr88250
UR  - https://pubs.usgs.gov/publication/ofr88250
ID  - ofr88250
ER  -