TY  - BOOK
AU  - Hutchinson , Robert W
TI  - Easy Lessons In Wireless
U1  - PL44 
PY  - 1931///
CY  - London
PB  - University Tutorial Press
KW  - Physics Light, Heat and Sound
N1  - PL means Physics Light, Heat and Sound Page No. 465-469 in A-Z Accession Register (Accession No. PL1-PL131)
ER  -