TY  - BOOK
AU  - Frohr, Friedrich & Orttenburger, Fritz
TI  - Introduction to electronic control engineering .-978-81-224-2595-6
SN  - 978-81-224-2595-6
U1  - 621.381 Fro/Ort 
PY  - 1982///
CY  - New age, New Delhi
ER  -