[FREQUENCY OF RESPIRATORY ALLERGY AND BRONCHITIS IN ROAD LABORERS].
D001249:Asthma; D001991:Bronchitis; D006801:Humans; D007558:Italy; D009784:Occupational Diseases; D012130:Respiratory Hypersensitivity; D013223:Statistics as Topic
ASTHMA; BRONCHITIS; ITALY; OCCUPATIONAL DISEASES; RESPIRATORY HYPERSENSITIVITY; STATISTICS
FR'EQUENCE DE L'ALLERGIE RESPIRATOIRE ET DES BRONCHITES CHEZ LES TRAVAILLEURS DU SERVICE DE LA VOIRIE.