TY  - BOOK
AU  - Noll, A. Michael
AU  - Noll, A. Michael
TI  - Introduction to telephones & telephone systems
SN  - 9781580530002
AV  - 621.385 NOL 1998 
U1  - 621.385 NOL 1998 
PY  - 1998///
CY  - Boston
PB  - Artech House
KW  - Communication Engineering
ER  -