A review of issues associated with protecting and improving our nation's aviation satellite-based Global Positioning System infrastructure : hearing before the Subcommittee on Aviation of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Twelfth Congress, second session, February 8, 2012.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.