McDonald, John C., (1936-)

Growing vulnerability of the public switched networks = implications for national security emergency preparedness : a report/ by: National Research Council (U.S.)., Committee on Review of Switching, Synchronization and Network Control in National Security Telecommunications.; McDonald, John C., (1936-); National Communications System (U.S.); National Research Council (U.S.)., Board on Telecommunications-Computer Applications.; National Research Council (U.S.)., Commission on Engineering and Technical Systems.; NetLibrary, Inc. (Electronic resources)