Heijde, Paul van der Groundwater management the use of numerical models / by Paul van der Heijde...[et.al] - 2nd ed. - Washington American geophysical union 1985 - x, 172 p.- - Water resources monograph,5 . includes appendix & bibliography ISBN: 875903142 Subjects--Topical Terms: Groundwater Dewey Class. No.: 333.9104072 / GRO