Taking measure of countermeasures. Pts. I & II [electronic resource] : hearing before the Subcommittee on Emergency Preparedness, Response and Communications of the Committee on Homeland Security, House of Representatives, One Hundred Twelfth Congress, first session, April 13, 2011 and May 12, 2011.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.
