Gray, Robert L. (Robert Lee), <br/><br/>
Physics problems - electricity, magnetism and optics / 
by Robert L. Gray. 
 - New York :  Wiley,  19740. 
 - xv,158 pages :  illustrations ;  26 cm. 
 - Self-teaching guides. .
<br/><br/> With answer. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0471324116 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electricity--Problems, exercises, etc.<br/>Magnetism--Problems, exercises, etc.<br/>Optics--Problems, exercises, etc.