TY  - BOOK
AU  -  Carlson (xeukkt) (Pyk b) CARILLY (PAUL B.)
TI  - Cmmmunication Systems an Introduction to Sprials and Noise in Elcfrical Communtaion  
U1  - 621.382'23 
CY  - N.DELHI
PB  -  TMH 
ER  -