Narlikar, Jayant V. <br/><br/>
Seven wonders of the cosmos 
Jayant V. Narlikar 
 - Cambridge  Cambridge University press  c1999 
 - xi,324p.: ill., maps. ; 26cm. 
<br/><br/><label>ISBN: </label>0521638984 
<br/><br/><label>Dewey Class. No.: </label>520  / NAR