Barr, James R. <br/><br/>
Principles of direct-current electrical engineering / 
James R. Barr. 
 - 2d ed. 
 - London,  I. Pitman,  C1948. 
 - x, 486 p.  illus.  22 cm. 
<br/><br/> Includes index. 
<br/><br/>
<br/><br/><br/>Enlish. 
<br/><br/><label>LCCN: </label>49017247  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering.<br/>Electric machinery--Direct current.
<br/><br/><label>LC Class. No.: </label>TK111  / .B3 1948 
<br/><br/><label>Dewey Class. No.: </label>621.3124/BAP