Smoke control : hearings before the Subcommittee on Public Health, Hospitals, and Charities, Committee on the District of Columbia, House of representatives, Seventy-fourth Congress, first session, on H.R. 6232 and H.R. 7204. [April 5, 1935]
United States. Congress. House. Committee on the District of Columbia. Subcommittee on Public Health, Hospitals, and Charities