- Bureau of Resource Protection : http://www.magnet.state.ma.us/dep/brp/ww/rpwwhome.htm
- Elkhorn Slough Foundation : http://www.elkhornslough.org
- National Estuary Program : http://www.epa.gov/nep/nep.html
- Office of Water : http://www.epa.gov/OWOW/wetlands
- Sakatachewan Wetland Conservation Corporation
(SWCC) : http://www.wetland.sk.ca
- Society of Wetland Scientists : http://www.sws.org
- University of Wisconsin-Madison Institute For
Environmental Studies : http://www.ies.wisc.edu/research/wrm98
- Wetlands International-Africa, Europe, Middle
East*AEME :
http://www.wetlands.agro.nl
- ASTEC : https://www.astec-edm.co.jp
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