title: The history of MODFLOW.
authors.affiliation: McDonald Morrissey Associates Inc., 11735 Bowman Green Dr., Reston, VA 20190, USA.
authors.forename: Michael G
authors.initials: MG
authors.lastname: McDonald
authors.forename: Arlen W
authors.initials: AW
authors.lastname: Harbaugh
mesh_terms: D005844:Geology / Q000266:history*; D049673:History, 20th Century; D008962:Models, Theoretical; D012984:Software; D012987:Soil; D014481:United States; D014872:Water Movements; D014881:Water Supply / Q000266:history*
chemical_list: D012987:Soil