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Start Over Formats Text ✖Remove constraint Formats: Text Authors Pennsylvania. State Board of Health and Vital Statistics, author. ✖Remove constraint Authors: Pennsylvania. State Board of Health and Vital Statistics, author. Titles Precautions against trichinosis ✖Remove constraint Titles: Precautions against trichinosis Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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