Microcomputer programs for groundwater studies / David Clarke. Clarke, David (David K.) Groundwater Computer programs. Microcomputers Programming. GB1001.72.E45 C53 1987 551.492 19 CLM Includes index. Amsterdam ; New York : Elsevier, 1987. 1987. 1987 Text 1 v. (various pagings) : eng Developments in water science ; 30