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2. Hypertrophic gingivitis in Indian children and adults;Marshall-Day;Ind. J. M. Research,1947
3. Hypertrophic gingivitis among Chinese;Anderson;Nat. M. J. of China,1939
4. Primary hypertrophy of the gums;Ruggles;J.A.D.A.,1924
5. Manual for the differential diagnosis of oral lesions;Bernier,1942