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Aquatic toxicology and hazard assessment proceedings of the fourth Annual Symposium on Aquatic Toxicology held 16-17 Oct. 1979 in Chicago, Ill.

Drinking-water and sanitation, 1981-1990 a way to health.

Long-term perspectives for water use and supply in the ECE region report on recent experience and prospects for time horizons 1990 and 2000

Mobilizing local resources for irrigation par Levine, Gilbert

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Biology of freshwater pollution. par Mason, C. F.

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Aquatic pollution, an introductory text par Laws, Edward A., 1945-

Aquatic chemistry an introduction emphasizing chemical equilibria in natural waters par Stumm, Werner

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