Não informado. (1930). National Institute of Health bulletin. U.S. Public Health Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. National Institute of Health Bulletin. Washington: U.S. Public Health Service, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. National Institute of Health Bulletin. U.S. Public Health Service, 1930.
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