The AT&T Consent Decree's Manufacturing Restriction: Hearing Before the Subcommittee on Antitrust, Monopolies, and Business Rights of the Committee on the Judiciary, United States Senate, One Hundred Second Congress, First Session, on S. 173, a Bill to Permit the Bell Telephone Companies to Conduct Research On, Design, and Manufacture Telecommunications Equipment, and for Other Purposes, May 21, 1991, Volume 4