TY  - BOOK
AU  - Phillips,Charles L.
AU  - Harbor,Royce D.
TI  - Feedback control systems
SN  - 0133138917
U1  - TJ/216 
PY  - 1988///
CY  - Englewood Cliffs
PB  - Prentice-Hall.
KW  - Feedback control systems.
ER  -