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Start Over Subjects Protective Factors ✖Remove constraint Subjects: Protective Factors Titles The comparative rarity of pulmonary tuberculosis in the highlands of Pennsylvania and the adjacent counties of New York ✖Remove constraint Titles: The comparative rarity of pulmonary tuberculosis in the highlands of Pennsylvania and the adjacent counties of New York Publication Year 1894 ✖Remove constraint Publication Year: 1894

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  • The comparative rarity of pulmonary tuberculosis in the highlands of Pennsylvania and the adjacent counties of New York1