TY  - BOOK
AU  - Puchalka,T.
TI  - Elements and circuits for automatic control / 
U1  - 629.8 
PY  - 1968///
CY  - London
PB  - Ileffe Books, 
KW  -  Electric circuits
KW  - Electronic controllers
KW  -  Automation
N1  - Includes index: p217-221
ER  -