TY  - BOOK
AU  - EBY, GEORGE S,WELCH, HERBERT E,WATSON, HERBERT M
TI  - UNDERSTANDING RADIO A GUIDE TO PRACTICAL OPERATION AND THEORY
U1  - 621.384 WAT'U 
PY  - 1960///
CY  - NEWYORK
PB  - MCGRAW HILL
ER  -