[Committee hearings] serial, 89th Congress. BBB. Prohibit feeding of livestock by certain packers, hearings before Subcommittee on Livestock and Feed Grains, 89th Congress, 2d session, on HR. 12415. H.R. 12868, H.R. 13587, and H.R. 18172, Apr. 21-Oct. 6, 1966.