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Start Over Collections Medicine in the Americas, 1610-1920 ✖Remove constraint Collections: Medicine in the Americas, 1610-1920 Subjects Guaiacol -- therapeutic use ✖Remove constraint Subjects: Guaiacol -- therapeutic use Titles Guaiacol, topically, as a prophylactic against diphtheria ✖Remove constraint Titles: Guaiacol, topically, as a prophylactic against diphtheria

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