TY  - BOOK
T1  - Basic telephone switching systems
A1  - Talley, David
LA  - English
PP  - Rochelle Park, N.J.
PB  - Hayden Book Co.
YR  - 1979
ED  - 2nd ed.
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217602890108
OP  - 184
CN  - TK 6397 T355 1979
SN  - 0810456877
KW  - Telephone systems.
KW  - Telephone, Automatic.
ER  -