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Keywords from Image Description:
Sanford Christie Barnum. Sanford Christie Barnum the inventor of dental rubber dam Winkler Reinhardt Sanford Christie Barnum Der Erfinder des Kofferdam in Die Quintessenz Michael Ottenbruch PD age PDArt DEFAULTSORT Barnum Sanford Christie Dentists from the United States Barnum Men of the United States History of medicine births