TY - RPRT TI - Modifications of a three-dimensional ground-water flow model to account for variable water density and effects of multiaquifer wells AU - A.L. Kontis AU - R.J. Mandle PY - 1988 DO - 10.3133/wri874265 UR - https://pubs.usgs.gov/publication/wri874265 ID - wri874265 ER -