Não informado. (1967). Ontario Geography. University of Western Ontario, Department of Geography.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Ontario Geography. Ontario, Canada: University of Western Ontario, Department of Geography, 1967.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Ontario Geography. University of Western Ontario, Department of Geography, 1967.
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