Robert A. Taft Sanitary Engineering Center: Technical reports. W60-3. Biological problems in water pollution, transactions of 2d seminar on biological problems in water pollution, held Apr. 20-24. 1959, at Cincinnati, Ohio, under sponsorship of Water Supply and Water Pollution Research Program, Robert A. Taft Sanitary Engineering Center [with lists of references]; compiled by C. M. Tarzwell.

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