Browsing Manuals, Guides and Toolkits by Author "Helmer, Richard"
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles
United Nations Environment Programme; World Health Organization; Water Supply & Sanitation Collaborative Council (1997)Water pollution control is clearly one of the most critical of those challenges. Without urgent and properly directed action, developing countries face mounting problems of disease, environmental degradation and economic ...