by PEI Associates, Inc. for Air and Energy Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency and Center for Environmental Research Information, Office of Research and Development, U.S. Environmental Protection Agency
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