Não informado. (2004). Journal of the Sanitary Engineering Division. American Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Sanitary Engineering Division. New York: American Society of Civil Engineers, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Sanitary Engineering Division. American Society of Civil Engineers, 2004.
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