Não informado. (1959). Dental school newsletter. University of Puerto Rico, School of Dentistry.
Citace podle Chicago (17th ed.)Não informado. Dental School Newsletter. San Juan: University of Puerto Rico, School of Dentistry, 1959.
Citace podle MLA (8th ed.)Não informado. Dental School Newsletter. University of Puerto Rico, School of Dentistry, 1959.
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