title: [Methodical and methodological approaches to social hygiene research].
mesh_terms: D004185:Disability Evaluation; D008722:Methods; D009787:Occupational Medicine; D011634:Public Health; D012107:Research Design; D012959:Socioeconomic Factors; D014586:USSR
vernacular_title: Metodicheskie i metodologicheskie podkhody k sotsial'no-gienicheskim issledovaniiam.