[CURRENT ASPECTS OF CHRONIC RESPIRATORY DISEASES].
D002908:Chronic Disease; D004813:Epidemiology; D006801:Humans; D012120:Respiration Disorders; D012140:Respiratory Tract Diseases; D015022:Yugoslavia
EPIDEMIOLOGY; RESPIRATORY TRACT DISEASES; YUGOSLAVIA
SUVREMENI ASPEKTI KRONI CNIH RESPIRATORNIH BOLESTI.