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UNEP-GPA - Global Programme of Action for the Protection of the Marine Environment from Land-based Activities, United Nations Environment Programme. 2004. Water Supply and Sanitation Coverage in UNEP Regional Seas, Need for Rational Wastewater Emission Targets? Section III: An Inventory of regional Specific Data and the Feasibility of developing Regional Wastewater Emission Targets (WET). The Hague, Netherlands.