Não informado. (1995). Journal of the Chartered Institution of Water and Environmental Management. Lavenham Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Chartered Institution of Water and Environmental Management. London: Lavenham Press, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of the Chartered Institution of Water and Environmental Management. Lavenham Press, 1995.
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