De Barr, A. E. <br/><br/>
The magnetic circuit / 
by A. E. De Barr 
 - London :  Institute of Physics,  1953 
 - 62 p. :  ill. ;  19 cm. 
 - The Institute of Physics monographs for students .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnetic materials