Keeping the Space Environment Safe for Civil and Commercial Users: Hearing Before the Subcommittee on Space and Aeronautics, Committee on Science and Technology, House of Representatives, One Hundred Eleventh Congress, First Session, April 28, 2009
United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Space and Aeronautics
Jan 2009 · U.S. Government Printing Office