MacColl, LeRoy A. <br/><br/>
Fundamental Theory of Servomechanisms / 
L.A. MacColl. 
 - Second Printing 
 - New York :  D.Van Nostrand Company, Inc.,  c1946. 
 - 130 p. :  fig., tables. 
<br/><br/>Includes Bibliographical References and Index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control Engineering