Vonderlehr, R. A. (1939). Subject: United States Public Health Service leaflets on syphilis.
Čikaški stil citiranjaVonderlehr, R. A. Subject: United States Public Health Service Leaflets On Syphilis. 1939.
MLA način citiranjaVonderlehr, R. A. Subject: United States Public Health Service Leaflets On Syphilis. 1939.
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