Epidemiology, etiology, and prevention of periodontal diseases : report of a WHO scientific group [meeting held in Moscow from 23 November to 2 December 1977].

Epidemiology, etiology, and prevention of periodontal diseases : report of a WHO scientific group [meeting held in Moscow from 23 November to 2 December 1977]. - 60p. - (WHO technical report series ; 621) .

92-4-120621-7


Periodontal diseases
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