TY  - BOOK
AU  - Dordick, Herbert S..
TI  - Understanding Modern Telecommunications / 
SN  - 0-07-017662-0
U1  - BVOa D65 
PY  - 1991///
CY  - New York, N.Y. 10020 : 
PB  - Serving the Need for Knowledge , 
KW  - Telecommunication
ER  -