TY  - BOOK
AU  - Gupta,Sushil Das
TI  - Control system theory: a textbook for engineering students 
PY  - 1994///
CY  - [S.l.]
PB  - Khanna Publishers
UR  - http://www.amazon.com/exec/obidos/ASIN/B0007C2FB8/chopaconline-20
ER  -