TY  - BOOK
AU  - Martin,James
TI  - Future developments in tele-communications
U1  - 621.38 MARf 
PY  - 1977///
CY  - New Jersey
PB  - Prentice-Hall
KW  - TELECOMUNICACIONES
N1  - Prologue. -- PART I. Telecommunications and its uses. --PART II. Synthesis. -- PART. III. Technology
ER  -