[CHANGES IN THE RESPIRATORY SYSTEM IN WORKERS IN A DUSTY ENVIRONMENT].
D003604:Czechoslovakia; D004391:Dust; D004782:Environmental Health; D006801:Humans; D009784:Occupational Diseases; D012137:Respiratory System; D012141:Respiratory Tract Infections
D004391:Dust
CZECHOSLOVAKIA; DUST; ENVIRONMENTAL HEALTH; OCCUPATIONAL DISEASES; RESPIRATORY TRACT INFECTIONS
ZM ENY V D'YCHAC'ICH CEST'ACH U PRACUJ'IC'ICH V PRA SN'EM PROST RED'I HRUDKOVNY.