Não informado. (1959). Quarterly of the National Dental Association. National Dental Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Quarterly of the National Dental Association. Tuskegee, Ala: National Dental Association, 1959.
Lua MLA (8ú heag.)Não informado. Quarterly of the National Dental Association. National Dental Association, 1959.
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