[CURRENT PROBLEMS OF THE EPIDEMIOLOGY AND PREVENTION OF BOTKIN'S DISEASE].
D003140:Communicable Disease Control; D003141:Communicable Diseases; D004813:Epidemiology; D006505:Hepatitis; D006506:Hepatitis A; D006801:Humans; D014586:USSR
COMMUNICABLE DISEASE CONTROL; EPIDEMIOLOGY; HEPATITIS, INFECTIOUS; USSR