APA aipamena

 Hellawell, J. M. (1986).  Biological indicators of freshwater pollution and environmental management.  Elsevier Applied Science Publishers.

Chicago Style aipamena

 Hellawell, J. M.  Biological Indicators of Freshwater Pollution and Environmental Management.  Elsevier Applied Science Publishers, 1986.

MLA aipamena

 Hellawell, J. M.  Biological Indicators of Freshwater Pollution and Environmental Management.  Elsevier Applied Science Publishers, 1986.

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