TY  - BOOK
AU  - Beatty,R.T.
TI  - Radio data charts
U1  - 621.384083 
PY  - 0000///[19-?]
CY  - London
PB  - The Wireless World
KW  - Radio
KW  - Charts, diagrams, etc
KW  - Radio frequency
KW  - Charts, Diagrams, etc
KW  - Radio waves
ER  -