114 resultados para Hydrobiology and pollution
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Mode of access: Internet.
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Prepared for Office of Research and Development, U.S. Environmental Protection Agency under contract 68-01-0729, program element 1H1093.
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Also in Congressional serial volume 11368.
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Mode of access: Internet.
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"DOE/EV-0115."
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At head of title: U. S. Department of Health, Education, and Welfare.
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Mode of access: Internet.
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Bibliography: leaf 163.
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Cover title: The Finger Lakes drainage basin: official classifications.
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Mode of access: Internet.
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"Supplement. 2d session, Reconvened, Aug. 26, 1969."
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Mode of access: Internet.