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1
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5Published 1976Conference Proceeding Book
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11Lake restoration : proceedings of a national conference, August 22-24, 1978, Minneapolis, Minnesota.Published 1979Government Document Conference Proceeding Book
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12Published 1982Government Document Conference Proceeding Book
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16Published 1991Conference Proceeding Book
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17Published 1977Conference Proceeding Book
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20Published 1979Conference Proceeding Book