TY  - BOOK
AU  - Martin,James, x
AU  - x
TI  - Future development in telecommunications: x
SN  - x
U1  - 384/M379f 
PY  - 1971///
CY  - New Jersey
PB  - Prentice-Hall
KW  - Telecommunication
KW  - Communication
N1  - Includes
ER  -