Não informado. (1981). Water engineering and management. Scranton Gillette Communications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Water Engineering and Management. Des Plaines, Ill: Scranton Gillette Communications, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Water Engineering and Management. Scranton Gillette Communications, 1981.
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