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Land and land use classifications>
Wetlands classification and types @ USEPA
Ramsar Convention on Wetlands
World Wetlands Day @ Ramsar
America's Wetland Foundation
Association of State Wetland Managers
Endangered Species & Wetlands Report
• Stopped publication in 2015, but a sources of historical information.
Living Observatory [Massachusetts]
US National Wetlands Inventory @ USFWS
Wetland Protection & Restoration @ USEPA
Wetland Reserve Program @ NRCS @ USDA
ℹ>Hydrology & wetlands journals