Messengers, Morse Code, and Modems
(Heinemann/Raintree Jan. 1, 2000)
Discusses the development of various means of communication, from the printed word through telegraph and telephone to radio, television, and computers, examining the technology that has made communicating easier.
- Science Work
- 0739801384 / 9780739801383
- 12.8 oz.
- 8.5 x 0.5