Guymon, Gary L. Unsaturated Zone Hydrology By Gary L. Guymon - PTR Prentice Hall 1994 - xiv, 210 pages, 24 cm. includes appendix & index ISBN: 0-13-369083-0 Subjects--Topical Terms: Hydrologic cycle.Zone of aeration. Dewey Class. No.: 551.48 G99