[Importance of mass immunological examinations of railroad and subway workers].
D000041:Absenteeism; D006801:Humans; D007109:Immunity; D008403:Mass Screening / Q000379:methods; D009784:Occupational Diseases / Q000453:epidemiology* / Q000276:immunology; D011890:Railroads; D014586:USSR
Znachenie massovykh immunologicheskikh obsledovaniĭ rabochikh zheleznodorozhnogo transporta i metropolitena.