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Research explores pyorrhea and other gum diseases : periodontal disease / prepared by the Information Office, National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland 20014.

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If you’re visiting us, you won’t be able to print or use our PCs or laptops. If you want to sign-up for a free library membership, we’ll give you a temporary card for today and complete your membership next time you visit.

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National Institute of Dental Research (U.S.). Information Office.

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Research explores pyorrhea and other gum diseases : periodontal disease / prepared by the Information Office, National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland 20014.