United States. Environmental Protection Agency. Office of Research and Development & United States. Environmental Protection Agency. Office of Wetlands, Oceans, and Watersheds. (1993). Created and natural wetlands for controlling nonpoint source pollution. C.K. Smoley.
Chicago-Zitierstil (17. Ausg.)United States. Environmental Protection Agency. Office of Research and Development und Oceans United States. Environmental Protection Agency. Office of Wetlands. Created and Natural Wetlands for Controlling Nonpoint Source Pollution. Boca Raton, FL: C.K. Smoley, 1993.
MLA-Zitierstil (9. Ausg.)United States. Environmental Protection Agency. Office of Research and Development und Oceans United States. Environmental Protection Agency. Office of Wetlands. Created and Natural Wetlands for Controlling Nonpoint Source Pollution. C.K. Smoley, 1993.