Verruijt, A Theory of groundwater flow A. Verruijt - 2nd ed. - London Great Neck, N.Y Macmillian Press Distributed exclusively by Scholium International 1982 - vi, 144 p. ill. 24 cm. Distributor from label mounted on t.p Includes index Subjects--Topical Terms: Groundwater flow Dewey Class. No.: 551.49