TY  - RPRT
TI  - A feasibility study to estimate minimum surface-casing depths of oil and gas wells to prevent ground-water contamination in four areas of western Pennsylvania
AU  - T. F. Buckwalter
AU  - P. J. Squillace
PY  - 1995
DO  - 10.3133/wri874136
UR  - https://pubs.usgs.gov/publication/wri874136
ID  - wri874136
ER  -