TY  - BOOK
AU  - Singh,Anokh, x
AU  - x
TI  - Principles of communication engineering: x
SN  - 8121904765
U1  - 621.38/S617p 
PY  - 1997///
CY  - New Delhi
PB  - S. Chand
KW  - Communication engineering
N1  - Includes
ER  -