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57. Air pollution, where are we going? [address] by John T. Middleton, Commissioner National Air Pollution Control Administration, Environmental Health Service, Public Health Service, presented at conference on environmental pollution sponsored by Junior League of Los Angeles and Rand Corporation, Los Angeles, Calif., Dec. 6, 1969.

60. National Air Pollution Control Administration publication AP (series). 41. Calculating future carbon monoxide emissions and concentrations from urban traffic data [with list of references; by] Wayne Ott, John F. Clarke, and Guntls Ozolins. June 1967 [2d printing Sept. 1970]