Urban air quality and chronic respiratory disease /
Paul R. Portney and John Mullahy.
APA Citation
Portney, P. R., Mullahy, J. (1989). Urban air quality and chronic respiratory disease. Washington, D.C.: Resources for the Future.
MLA Citation
Portney, Paul R, and John Mullahy. Urban Air Quality And Chronic Respiratory Disease. Washington, D.C.: Resources for the Future, 1989.
Warning: These citations may not always be complete (especially for serials).