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by -- National Research Council (U.S.) Committee on the Impacts of Stratospheric Change
by -- National Research Council (U.S.) Climatic Impact Committee
by -- National Research Council (U.S.)
by -- National Research Council (U.S.) Study Panel on Assessing Potential Ocean Pollutants; National Research Council (U.S.) Ocean Affairs Board
by -- National Academy of Sciences (U.S.) -- International Symposium on Eutrophication (1967 : University of Wisconsin, Madison).
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