TY  - BOOK
AU  - Bates, Regis J.
TI  - Principles of voice and data communications
SN  - 9780071257671
U1  - Circ. 621.382 B329p 2007 
PY  - 2007///
CY  - Boston : 
PB  - McGraw-Hill/Irwin, 
KW  - 1. Telecommunication.
N1  - Includes index

ER  -