Two and a half years after the first ecological sanitation conference in Bonn, the Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH and the International Water Association (IWA) jointly organised and held the 2nd International Symposium on ecological sanitation “ecosan – closing the loop” in April 2003 in Lübeck.
IWA, GTZ (2003). Ecosan - Closing the Loop Proceedings of the 2nd international symposium, 7th –11th April 2003, Lübeck, Germany IWA, GTZ
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