TY  - BOOK
ED  - Grosvenor Press International.
TI  - world communications
SN  - 0946027781
AV  - TK5101 .D48 1988
U1  - 001.51 20
PY  - 0000///[988
CY  - London]
PB  - Grosvenor Press International
KW  - Telecommunication systems
KW  - Telecommunication
ER  -