UN (Unesco, WHO and UNEP) WATER QUALITY ASSESSMENTS: A GUIDE to the USE of BIOTA, SEDIMENTS and WATER in ENVIRONMENTAL MONITORING, ed. D. Chapman, publ. E. & F.N. Spon, London, ISBN O-419-21600-6, price $ 22.95. pp. xxi + 626, figures and tables; index. SIMPLE GUIDE ON MANAGEMENT and CONTROL of WASTES, Royal Society of Chemistry, publ. Royal Society of Chemistry, Letchworth, Herts, UK, price $ 9.95, ISBN 0-85404-990-8, pp. xii + 61, 6 figures, 13 tables, index.
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