TY  - BOOK
AU  - Allen,John
TI  - Telecommunications
T2  - Macmillan science 16-19 project. University of Bath
SN  - 0333476271
PY  - 1990///
CY  - Houndsmill, Basingstoke
PB  - Macmillan
KW  - Telecommunication systems
ER  -