TY - RPRT TI - Influence of fracture anisotropy on ground water ages and chemistry, Valley and Ridge province, Pennsylvania AU - W.C. Burton AU - Niel Plummer AU - E. Busenberg AU - B.D. Lindsey AU - W.J. Gburek PY - 2005 DO - 10.1111/j.1745-6584.2002.tb02652.x UR - https://pubs.usgs.gov/publication/70024673 ID - 70024673 ER -