Não informado. (1947). Chronicle of the World Health Organization. World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Chronicle of the World Health Organization. Geneve, Suíça: World Health Organization, 1947.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Chronicle of the World Health Organization. World Health Organization, 1947.
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