Stewart, Welby Earl,  1908- <br/><br/>
Magnetic recording techniques / 
Welby Earl Stewart 
 - New York, :  McGraw-Hill,  c1958. 
 - ix, 272 p. :  ill. ;  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sound recording.<br/>Magnetic recorders and recording.
<br/><br/><label>Dewey Class. No.: </label>621.3893  / STM 1958