Federal Communications Commission : oversight of the Wireless Carrier [i.e. Telecommunications] Bureau : hearing before the Subcommittee on Communications of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifth Congress, second session, May 13, 1998.

Shipping list no.: 2000-0011-P.

Warning, Alert, and Response Network Act : report of the Committee on Commerce, Science, and Transportation on S. 1753.

"December 8, 2005."

Motorist aid systems study. State of the art report. Final report.

Federal Highway Administration, Office of Development, Washington, D.C.

The effect of the ionosphere on communication, navigation, and surveillance systems : based on Ionospheric Effects Symposium, 5-7 May 1987 /

Mode of access: Internet.

European police systems,

Mode of access: Internet.

American police systems,

Mode of access: Internet.