TY  - BOOK
AU  - Gottlieb,Irving
TI  - Frequency changers
U1  - 621.3815 
PY  - 1965///
CY  - London
PB  - W. Foulsham
KW  - Frequency changers
KW  - Electric current converters
KW  - Frequency  multipliers
KW  - Frequency dividers
N1  - Includes index
ER  -