Peter gabriel bergmann / <br/><br/>
Introduction to the theory of relativity  
by Bergmann P.G  
 - New delhi  Prentice hall of india   1987 
 - xvi,287p. :ills,  Hbk 
<br/><br/><label>ISBN: </label>0876922442 
<br/><br/><label>LC Class. No.: </label>QC6.B4 1987