Não informado. (1926). Dental rays. University of Pittsburgh, School of Dentistry.
Chicago-referens (17:e uppl.)Não informado. Dental Rays. Pittsburgh, Pa: University of Pittsburgh, School of Dentistry, 1926.
MLA-referens (8:e uppl.)Não informado. Dental Rays. University of Pittsburgh, School of Dentistry, 1926.
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