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Start Over Formats Text ✖Remove constraint Formats: Text Subjects Common Cold -- drug therapy ✖Remove constraint Subjects: Common Cold -- drug therapy Titles The application by insufflation of medicated powders to the upper air passages for the relief of catarrhal conditions ✖Remove constraint Titles: The application by insufflation of medicated powders to the upper air passages for the relief of catarrhal conditions Copyright Public domain ✖Remove constraint Copyright: Public domain

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  • The application by insufflation of medicated powders to the upper air passages for the relief of catarrhal conditions1