References
- Basu M. K., Datta A. N. Report on prevalence of periodontal disease in the adult population in Calcutta by Ramfjord's technique. J. All-India Dent. Ass. 1963; 35: 187
- Brandtzæg P., Jamison H. C. A study on periodontal health and oral hygiene in Sorwegiau army recruits. J. Periodont. 1061; 35: 302
- Chawla T. M., Nanda H. S., Mathur M. N. Prevalence of periodontal disease in urban Lucknow (India) using Ramfjord's teclinique. J. All-India Dent. Ass. 1963; 35: 151
- Emslie R. D. (1965) Report on a dental health survey in the republic of the Sudan. 1. October–30. November, 1963. WHO, Géneve
- Greene J. C. Periodontal disease in India. Report of an epide-miological study. J. Dent. Res. 1960; 39: 302
- Greene J. C., Vermillion J. H. The simplified oral hygiene index. D. Amer. dent. Ass. 1964; 68: 7
- Gupta O. P. Epidemiological study of periodontal disease in Tre-vandrum, India. I. Dent. Res. 1964; 43: 876, suppl. Sept./Oct. Abstract.
- Harris R. Periodontal disease in a groop of school children in Thailand. Aust. Dent. J. 1861; 6: 151
- Held A. I. (1964) Report on Iran dental health survey. 1. November 1962–28. November, 1962. WHO, Géneve
- Litttleton S. W. Dental caries arid periodontal disease among Ethiopian civilians (D. Ah. 8:763, 1963). Pub. Health Reports 1963; 78: 631
- McCombie F., Sfothard D. Relationship between gingivitis and other dental conditions. J. Canad. dent. Ass. 1964; 30: 506
- Mobley E., Smith S. H. Some social and economic factors relating to periodontal disease among young negroes. J. Amer. dent. Ass. 1963; 66: 486
- Ramfjord S. P. Periodontal status in boys 11–17 years old in Bombay. India. J. Periodont. 1961; 52: 237
- Russell A. L. The geographical distribution and epidemiology of periodontal disease. WHO/DH/34. 1960
- Russell A. L. International nutrition surveys: A summary of preliminary findings. J. Dent. Res. 1963; 42: 232
- Russell A. L., Ayers P. Periodontal disease anti socio-economic status in Birmingham. Ala. Am. J. Pub. Health 1960; 50: 206
- Russell D. A., Lentherwood E. C., Consolazio C. F., Van Reen R. Periodontal disease and nutrition in South Vietnam. J. Dent. Res. 1965; 44: 775
- Sander M. C., Stahl S. S. Prevalence of periodontal disease in a hospitalized population. J. Dent. Res. 1960; 39: 493