TY  - BOOK
AU  - Sparkes John
ED  - Open University.
ED  - Open University T101 Block 2 F prepared by the course team.
TI  - Feedback: block 2, prepared by the course team 
PY  - 1982///
CY  - Milton Keynes,Great Britain
PB  - The Open University
KW  - Feedback control systems
ER  -