Não informado. (1926). Dental rays. University of Pittsburgh, School of Dentistry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Dental Rays. Pittsburgh, Pa: University of Pittsburgh, School of Dentistry, 1926.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Dental Rays. University of Pittsburgh, School of Dentistry, 1926.
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