Following toxic clouds : science and assumptions in plume modeling : hearing before the Subcommittee on National Security, Emerging Threats and International Relations of the Committee on Government Reform, House of Representatives, One Hundred Eighth Congress, first session, June 2, 2003.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2004.