Nagrath, I. J & Gopal, M <br/><br/>
Control system engineering  

 - 5th ed . 
 - New Age  New Delhi  2007 
 - xiii, 895 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>621.3811 Nag/Gop