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Periodical

EVOLUTION OF PRESENT FEDERAL LAW.

Subjects: ENVIRONMENTAL law; UNITED States social policy

  • Source: Congressional Digest. Aug/Sep70, Vol. 49 Issue 8/9, p194. 4p.

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Academic Journal

Waterproof Sunblock?

Subjects: DRINKING water purification; MICROCYSTINS; TOXINS

  • Source: Environment. Apr99, Vol. 41 Issue 3, p21. 1/8p. 1 Black and White Photograph.

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  • 1-10 of  11 results for ""Water Purification methods""