Authors: ZEJDA JE SKIBA M ORAWIEC A DYBOWSKA T CIMANDER B

Citation: Je. Zejda et al., RESPIRATORY SYMPTOMS IN CHILDREN OF UPPER SILESIA, POLAND - CROSS-SECTIONAL STUDY IN 2 TOWNS OF DIFFERENT AIR-POLLUTION LEVELS, European journal of epidemiology, 12(1), 1996, pp. 115-120