Nagrath, I. J Gopal,M. <br/><br/>
Control systems engineering 
/ [by] I. J. Nagrath and M.Gopal 
 - 3rd ed. 
 - New Delhi  New age international  1989 
 - xv, 826p. 
<br/><br/> Includes bibligraphy & index 
<br/><br/><label>ISBN: </label>8122411924 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control system<br/>Frequency control systems
<br/><br/><label>Dewey Class. No.: </label>629.8  / NAG