TY  - GEN
AU  - Graham, Ian
TI  - Global networks
SN  - 9780237526290
AV  - TK5102 GRA 2000 
PY  - 2000///
CY  - London
PB  - Enans Brothers
KW  - Telecommunication systems
KW  - Juvenile literature
N1  - Originally published: 2000
ER  -