[PREVALENCE OF HEART DISEASES AND STUDY OF SOME SOMATIC CHARACTERISTICS IN ITALIAN RAILROAD WORKERS].
D003327:Coronary Disease; D005006:Ethnicity; D006331:Heart Diseases; D006801:Humans; D007802:Language; D015995:Prevalence; D011890:Railroads; D013223:Statistics as Topic
CORONARY DISEASE; RAILROADS; STATISTICS
PREVALENZA DELLE CARDIOPATIE E STUDIO DI ALCUNI CARATTERI SOMATICI IN DIPENDENTI DELLE FERROVIE ITALIANE.