Não informado. (1950). Bibliographical Series. Department of Mines and Technical Surveys.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bibliographical Series. Ottawa: Department of Mines and Technical Surveys, 1950.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bibliographical Series. Department of Mines and Technical Surveys, 1950.
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