Gardner, Martin <br/><br/>
Relativity simply explained /  
Martin Gardner ; il. by Anthony Ravielli. 
 - 1a ed. 
 - New York :   Dover Publications,   1996 
 - viii, 179 p. :  ìl. ;  21 cm. 
<br/><br/>Incluye ìndice 
<br/><br/><label>ISBN: </label>0486293157 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relatividad (fisica)
<br/><br/><label>LC Class. No.: </label>QC173.57  / G37 1996