Dentistry on stamps: Augusto Coelho e Souza.
Loevy
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Kowitz
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D001938:Brazil; D004497:Education, Dental / Q000266:history; D006665:History of Dentistry; D049672:History, 19th Century; D049673:History, 20th Century; D010678:Philately; D013515:Surgery, Oral / Q000266:history