TY  - BOOK
AU  - Biswas, Nripendra N.
TI  - Principles Of Telephony
SN  - 81-85273-09-X
U1  - 621.385 B621p 1988 
PY  - 2000///
CY  - Bangalore
PB  - Radiants Books
KW  - Communication
N1  - Communication Engineering
N2  - Principles, Telephony
ER  -