TY  - BOOK
AU  - Schoenbeck,Robert J.
TI  - Electronic communications: modulation and trasmission
SN  - 8120314832
U1  - 621.3822 SCH 
PY  - 1999///
CY  - New Delhi
PB  - Prentice Hall of India
N1  - Includes bibliographical references
ER  -