Ruud Kampf
International symposium on Saemangum Ecological Site Construction, Seoul, Korea, 24-26 November 2011: link
Application of Waterharmonica in setup of AquaforAll project in Nicaragua: link (page is not updated)
A project in Ukraine: Yulievsky constructed wetland to upgrade sewage treatment plant, a project for PUM, June 2006: link
Частицы ила как источник питания для дафний: link
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r@rekel.nl