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The cost of clean air.

APA Citation

United States. Department of Health, E. (19691970). The cost of clean air. Washington: U.S. G.P.O. .

United States. Department of Health, Education, and Welfare. Office of the Secretary. The Cost of Clean Air. Washington: U.S. G.P.O. , 19691970.

Warning: These citations may not always be complete (especially for serials).