Enlace original:
https://apps.who.int/iris/handle/10665/107374
World Health Organization. Regional Office for Europe
,
United Nations Environment Programme
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[Regional training course for trainers on municipal wastewater treatment plant operation and management (WHO/UNEP Joint Project MED POL Phase III) : report on a WHO/UNEP regional training course, Athens, Greece 16-20 October 2001]