TY  - BOOK
AU  - Halliwell, B. J., ed. 
TI  - Advanced communication systems
T2  - Standard Telephones and Cables Monograph Series
SN  - 0-408-00124-0
PY  - 1974///
CY  - London
PB  - Newnes Butterworths
KW  - Communication SatellitesF.D.M. SystemsP.C.M. Systems
ER  -