Regional medical programs : alcoholics and narcotics addicts facilities; health services for domestic agricultural migratory workers : hearings before the Subcommittee on Public Health and Welfare of the Committee on Interstate and Foreign Commerce, House of Representatives, Ninetieth Congress, second session, on 15758, a bill to amend the Public Health Service act so as to extend and improve the provisions relating to regional medical programs, to extend the authorization of grants for health of migratory agricultural workers, to provide for specialized facilities for alcoholics and narcotic addicts, and for other purposes, March 26, 27, and 28, 1968.