A temporary decrease in the ventilatory function of an urban population during an acute increase in air pollution - Lende, R. Van der; Hoygen, C; Jansen-Koster, E. J; Knijpstra, S; Peset, R; Visser, B. F; Wolfs, E. H. E; Orie, N.G.M (Bull. Physiopath. resp, 1975)