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Respiratory effects of air pollution in chronic obstructive pulmonary disease: a three month prospective study.

G. Town, I. R. Martin, L. Toop, 1997, Thorax.

*Community Change: *Community Development: Coralunity Resources: *Community Services: Evaluation Methods: Family Income: National Surveys: Problem Solving: *Program Evaluation: *Program Improvement: Public Policy: *Rural

P. Price, 1980 .