Antitrust damage allocation : hearings before the Subcommittee on Monopolies and Commercial Law of the Committee on the Judiciary, House of Representatives, Ninety-seventh Congress, first and second sessions, on antitrust damage allocation, October 21, 1981 ; March 3, 18, June 9, and September 9, 1982. (U.S. G.P.O.,, 1983)