Langill Jr., A. W.  <br/><br/>
Automatic control systems engineering :   V.2: Advanced Control Systems Engineering 

 - Englewood Cliffs, N. J. :   Prentice Hall,   1965. 
 - 767 xvii p.  diagram  ilus. 
<br/><br/><label>Universal Decimal Class. No.: </label>681.5