Mobile communication systems - United States.

Wireless communications : = principles and practice / by: (Language materials, printed)

Wireless spectrum finder = telecommunications, government, and scientific radio frequency allocations in the U.S., 30 MHz-300 GHz / by: (Language materials, printed)

Toys to tools : = connecting student cell phones to education / by: (Language materials, printed)

Mobile communication systems- United States.

Telecommunication systems- United States.

Radio frequency allocation- United States.

Wireless communication systems- United States.

Educational technology.

Cellular telephones.

Education- Effect of technological innovations on.