TY  - BOOK
AU  - Murphy,R.J.
TI  - Telecommunications networks: a technical introduction 
SN  - 0672225883
PY  - 1987///
CY  - Indianapolis, Indiana : 
PB  - Howard W. Sams & Company, 
KW  - Data transmission systems
KW  - Integrated services digital networks
KW  - Telecommunication systems
N1  - Includes index
ER  -