Water pollution control : a guide to the use of water quality management principles / edited by Richard Helmer and Ivanildo Hespanhol.
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TextPublication details: London ; New York : E & FN Spon, 1997.Edition: 1st. edDescription: xvi, 510 p. : ill., mapsISBN: - 0419229108
- 363.739/4
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"Published on behalf of UNEP, United Nations Environment Program, Water Supply & Sanitation Collaborative Council, World Health Organization."
Includes bibliographical references and index.

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