De Barr, A.E. <br/><br/>
The magnetic circuit  :  powder cores, ferrites, permanent magneti c materials and miscellaneous magnetic materials / 
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
<br/><br/><label>Dewey Class. No.: </label>530.6242