title: A method for studying morbidity from precancerous conditions and the question as to frequency of their occurrence on the Gerritory of the Kirghiz Soviet Socialist Republic.
mesh_terms: D004777:Environment; D005006:Ethnicity; D005260:Female; D006801:Humans; D007707:Kyrgyzstan; D008297:Male; D009790:Occupations; D011230:Precancerous Conditions / Q000453:epidemiology* / Q000517:prevention & control