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Citation: Dc. Christiani et al., Longitudinal changes in pulmonary function and respiratory symptoms in cotton textile workers - A 15-yr follow-up study, AM J R CRIT, 163(4), 2001, pp. 847-853

Authors: Pan, LD Cao, M

Citation: Ld. Pan et M. Cao, Study on the period changes of XY Leonis, ASTRO SP SC, 259(3), 1998, pp. 285-293