TY - RPRT TI - Combined use of digital aquifer models and field base-flow data to identify recharge leakage areas of artesian aquifers AU - R.H. Johnston AU - P.P. Leahy PY - 1976 DO - 10.3133/ofr76795 UR - https://pubs.usgs.gov/publication/ofr76795 ID - ofr76795 ER -