||Solving ground water problems with models proceedings of the fourth international conference on the use of models to analyze and find working solutions to ground water problems, February 7-9, 1989, the Westin, Indianapolis, Indiana /
||National Water Well Association,
Water, Underground--Mathematical models--Congresses ;
Water, Underground--Data processing--Congresses ;
Water-supply--Mathematical models--Congresses ;
Papers from the NWWA Conference on Solving Water Problems with Models held Feb. 7-9, 1989 at the Westin, Indianapolis, Ind.