TY  - BOOK
AU  - Bates, J.Regis
AU  - Bates, Marcus
TI  - Principles of voice and Data communications
SN  - 139780072257328
U1  - 621.382 20
PY  - 2007///
CY  - Boston
PB  - McGraw-Hill
KW  - Voice and Data Communication
N1  - Includes:Index
ER  -