TY - RPRT TI - Identification of water-bearing fractures by the use of geophysical logs, May to July 1998, former Naval Air Warfare Center, Bucks County, Pennsylvania AU - Randall W. Conger AU - Philip H. Bird PY - 1999 DO - 10.3133/ofr99215 UR - https://pubs.usgs.gov/publication/ofr99215 ID - ofr99215 ER -