THE INCIDENCE OF VENEREAL DISEASE IN AN INDUSTRY. A SURVEY OF 259 CASES.
D003625:Data Collection; D006801:Humans; D015994:Incidence; D009787:Occupational Medicine; D012749:Sexually Transmitted Diseases; D013019:South Africa; D013223:Statistics as Topic; D013587:Syphilis
INDUSTRIAL MEDICINE; SOUTH AFRICA; STATISTICS; SYPHILIS