977 resultados para Water -- Pollution -- Toxicology


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"October, 1981."

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"Prepared for the Illinois Dept. of Natural Resources."

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Cover and spine title: Water quality management plan.

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"This report...contains individual chapters on 23 water pollutants regulated by the State of Illinois."

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At head of title : 93d Cong., 2d sess. House report no. 93-1012.

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"September, 1972."

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Mode of access: Internet.