Nagrath,I.J. <br/><br/>
Control systems engineering 

 - 2nd ed. 
 - New Delhi  Wiley Eastern Limited  1982 
 - xii,724 p. 
<br/><br/><label>ISBN: </label>0852266057 
<br/><br/><label>Dewey Class. No.: </label>S/C-S/T D6,77 M2N;6