TY  - BOOK
AU  - John C. Hancockancock
TI  - An Introduction to the principles of communication theory 
SN  - 0070993416
U1  - 621.382 
PY  - 2002///
CY  - New Delhi
PB  - Tata McGraw -HiIl Publishing Company
KW  - Tata McGraw -HiIl Publishing Company
ER  -