Não informado. (1959). Quarterly of the National Dental Association. National Dental Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Quarterly of the National Dental Association. Tuskegee, Ala: National Dental Association, 1959.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Quarterly of the National Dental Association. National Dental Association, 1959.
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