NASA contests and prizes : how can they help advance space exploration? : hearing before the Subcommittee on Space and Aeronautics, Committee on Science, House of Representatives, One Hundred Eighth Congress, second session, July 15, 2004.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2004.
