National Eutrophication Survey ; Pacific Northwest Environmental Research Laboratory, an associate laboratory of the National Environmental Research Center - Corvallis, Oregon ; and National Environmental Research Center - Las Vegas, Nevada ; with the cooperation of the Minnesota Pollution Control Agency and the Minnesota National Guard
Date
[1975]
Series
Working paper series (National Eutrophication Survey) ; no. 122
[by U.S. Environmental Protection Agency, National Eutrophication Survey] with the cooperation of the Rhode Island State Department of Health, the Rhode Island National Guard, and the Massachusetts Water Resources Commission
Date
[1974]
Series
Working paper (National Eutrophication Survey (U.S.)) ; no. 29
prepared by the North American Lake Management Society for the U.S. Environmental Protection Agency, Office of Water Assessment and Watershed Protection Division, Nonpoint Sources Branch