Não informado. (1966). Journal of Professional Activities. American Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Professional Activities. New York: American Society of Civil Engineers, 1966.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Professional Activities. American Society of Civil Engineers, 1966.
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