[EFFECT OF THE ENVIRONMENT IN PAPER MILLS ON THE UPPER RESPIRATORY TRACT OF THE WORKERS].
D003604:Czechoslovakia; D006863:Hydrogen-Ion Concentration; D009784:Occupational Diseases; D010209:Paper; D012137:Respiratory System; D012141:Respiratory Tract Infections
CZECHOSLOVAKIA; HYDROGEN-ION CONCENTRATION; OCCUPATIONAL DISEASES; RESPIRATORY TRACT INFECTIONS
VLIV PROST RED'I PAP'IREN NA HORN'I CESTY D'YCHAC'I PRACUJ'IC'ICH.