Communicating with the public during emergencies [electronic resource] : an update on federal alert and warning efforts : 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, July 8, 2011.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.
