TY - RPRT TI - Theory and application of an approximate model of saltwater upconing in aquifers AU - C. McElwee AU - M. Kemblowski PY - 1990 DO - 10.1016/0022-1694(90)90202-9 UR - https://pubs.usgs.gov/publication/70016206 ID - 70016206 ER -