Porter, Arthur,  1910- <br/><br/>
Introduction to servomechanisms. 

 - 2d ed. 
 - London,  New York,  Methuen;  Wiley :   1954. 
 - 176 p.  illus.  17 cm. 
<br/><br/><label>LCCN: </label>53011078  
<br/><br/><label>Subjects--Topical Terms: </label><br/>SERVOMECANISMOS