by GAO's role in supporting congressional oversight : an overview of past work and future challenges and opportunities : hearing before the Committee on Homeland Security and Governmental Affairs, United States Senate, One Hundred Tenth Congress, first session, March 21, 2007.
ISBN: 9780160806780 ISBN: 016080678X Publication & Distribution: Washington . U.S. G.P.O. . For sale by the Supt. of Docs., U.S. G.P.O., (c)2008.