TY - BOOK AU - Thomas,H.E. TI - The conservation of ground water: a survey of the present ground-water situation in the United States U1 - 551.49 PY - 1951/// CY - New York PB - McGraw-Hill KW - Groundwater KW - United States KW - Water-supply KW - Water conservation N1 - "Sponsored by the Conservation Foundation."; Bibliography: p. 301-321 ER -