Clean air : hearings before a special subcommittee on Air and Water Pollution of the Committee on Public Works, United States Senate, Eighty-eighth Congress, second session

"Field hearings held on progress and programs relating to the abatement of air pollution: Los Angeles, Calif., January 27, 1964; Denver, Colo., January 29, 1964; Chicago, Ill., January 31, 1964; Boston, Mass., February 17, 1964; New York, N.Y., February 18, 1964; Tampa, Fla., February 20, 1964."