Não informado. (1969). Proceedings of the Japan Society of Civil Engineers. Japan Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Japan Society of Civil Engineers. Tokyo: Japan Society of Civil Engineers, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Japan Society of Civil Engineers. Japan Society of Civil Engineers, 1969.
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