Magnets and Circuits 

 - Oxford:  Heinemann Publishers,  c1994. 
 - 31p.:  ill.,some col.; 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>9780431075662 0431075662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>magnets,circuit
<br/><br/><label>Dewey Class. No.: </label>538.4