The ExxonMobil-XTO merger [electronic resource] : impact on U.S. energy markets : hearing before the Subcommittee on Energy and Environment of the Committee on Energy and Commerce, House of Representatives, One Hundred Eleventh Congress, second session, January 20, 2010.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.
