Não informado. (1969). Bulletin of the Department of Geography. University of Tokyo, Department of Geography.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Department of Geography. Tokyo: University of Tokyo, Department of Geography, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of the Department of Geography. University of Tokyo, Department of Geography, 1969.
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