Monopolies. Amending sec. 7 and 11 of Clayton act, hearings before subcommittee no. 2, 80th Congress, 1st session, on H. R. 515, to amend act to supplement existing laws against unlawful restraints and monopolies, and for other purposes, approved Oct. 15, 1914 (38 Stat. 730), as amended, Mar. 19-Apr. 21, 1947.