TY - RPRT TI - Relation between selected well-construction characteristics and occurrence of bacteria in private household-supply wells, south-central and southeastern Pennsylvania AU - Tammy M. Zimmerman AU - Michele L. Zimmerman AU - Bruce D. Lindsey PY - 2001 DO - 10.3133/wri014206 UR - https://pubs.usgs.gov/publication/wri014206 ID - wri014206 ER -