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02a0017173;20011205d1993 ekmy0engy01;eng;a z 000yy;r;A Modular Finite-Element model(MODFE)for areal and axisymmetric ground-water-flow problems, part 3;design philosophy and programming details;Lynn J. Torak;Denver;U.S. Government Printing Office;1993;viii, 243 p.;ill;Techniques of Water-Resoureces Investigations of the U.S. Geological Survey; Book 6, Chapter A5;2252;aTechniques of Water-Resoureces Investigations of the U.S. Geological Survey; Book 6, Chapter A5;适合于区域性和轴对称的地下水流问题的模块有限元模型, 部分3, 基本原理的设定和程序设计的内容;a494.4;Torak;Lynn J.;101;454468;494.4;T63;r1602.01;a07;b1