%0 Online %0 Book %I U.S. Government Printing Office %D 2014 %C Washington %G English %T Effective accountability : tier rankings in the fight against human trafficking : hearing before the Subcommittee on Africa, Global Health, Global Human Rights, and International Organizations of the Committee on Foreign Affairs, House of Representatives, One Hundred Thirteenth Congress, second session, April 29, 2014 %U http://purl.fdlp.gov/GPO/gpo53116