. . "Environmental tobacco smoke : hearing before the Subcommittee on Health and the Environment of the Committee on Energy and Commerce, House of Representatives, One Hundred Third Congress, first session, July 21, 1993"@en . . . . "Environmental tobacco smoke hearing before the Subcommittee on Health and the Environment of the Committee on Energy and Commerce, House of Representatives, One Hundred Third Congress, first session, July 21, 1993"@en . . . . . . . . . . . .