Não informado. (1969). Proceedings of the Japan Society of Civil Engineers. Japan Society of Civil Engineers.
Chicago-referens (17:e uppl.)Não informado. Proceedings of the Japan Society of Civil Engineers. Tokyo: Japan Society of Civil Engineers, 1969.
MLA-referens (8:e uppl.)Não informado. Proceedings of the Japan Society of Civil Engineers. Japan Society of Civil Engineers, 1969.
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