Apfel, Necia H. <br/><br/>
It's all relative:  Einstein's theory of relativity / 
by Necia H. Apfel 
 - 1st ed. 
 - New York:  Wiliam Morrow and company, inc,   1981 
 - 141p.:ill. 
<br/><br/>includes index 
<br/><br/><label>ISBN: </label>068841981 
<br/><br/><label>Subjects--Topical Terms: </label><br/>relativity physics
<br/><br/><label>LC Class. No.: </label>QCI73   / APF 1981