Daily air pollution effects on children's respiratory symptoms and peak expiratory flow
Vedal, S ; Schenker, M B ; Munoz, A ; Samet, J M ; Batterman, S ; Speizer, F E
Am. J. Public Health; (United States), 1987-06, Vol.77 (6), p.694-698 [Periódico revisado por pares]Washington, DC: Am Public Health Assoc
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