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2. APHA (1985) Standard Methods for the Examination of Water and Wastewater, 16th edn. American Public Health Association, Washington, DC
3. APHA (1989) Standard Methods for the Examination of Water and Wastewater, 17th edn. American Public Health Association, Washington, DC
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5. Considerações sobre a nova legislação brasileira de qualidade de águas;Branco;Rev. DAE,1989