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BOOK REVIEWS
introduced, the first four numbers of which are the following: No. 1. E. PALMEN: Evaluation of atmospheric moisture transport .for hydrological purposes. No. 2. V. P. SU~RAHMANYAM:Incidence and spread of continental drought. No. 3. A. F. RALNSmD: Methods of estimating a real average preeipitation. No. 4. J. P. BRUCE and J. NEMEC: Worm Weather Watch and its implications in hydrology and water resources management. (Nature and Resources, Vol. IV. No. 1, 1968.)
HARRY H. BARNES,Jr. : Roughness characteristics of natural channels. United States Government Printing Office, 1967, 213 p. Geological Survey Water Supply, paper 1849.)
Water resources journal. New York, United Nations (Economic Commission for Asia and the Far East - ECAFE), 1967, 74 p. (Ref. St/Ecafe/ser. c/71 dated March 1967.) An account of the tropical cyclones, floods and droughts which caused major damage in countries in the ECAFE region during 1966. W. G. V. BALCHIN: Water Policy in the United States; Review. Geogr. Journ., Vol. 133, Pt. 4, Dec. 1967, pp. 514-516. In this article Professor Balchin reviews the following three United States publications and considers the bearing they may have on certain British water problems and policies: Alternatives in Water Management: A report of the Committee on Water, Division of Earth Sciences. National Academy of Sciences, National Research Council, Washington D.C., 1966, Publication 1408.9 × 6 inches; 52 pages. A Unified National Program for Managing Flood Losses: A report by the Task Force on Federal Flood Control Policy, House Document No. 465 of the 2nd Session 89th Congress. Washington D.C., 1966. 9 × 6 inches; 47 pages; text-figures. Water Research: Edited by Allen V. Kneese and Stephen C. Smith, Resources for the Future Inc., John Hopkins Press, Baltimore 1966. Alternatives in water management arises from a Committee on Water, appointed in 1964 by the National Academy of Sciences, to examine in some detail the important interactions between expanding knowledge concerning water resources and water use in the physical sciences, the social sciences and engineering on the one hand, and increasingly complex decisions of