Asimov, Isaac,  1920- <br/><br/>
The collapsing universe /  [electronic resource]  
by Isaac Asimov. 
 - New York :  Walker,  1977. 
 - 204 p. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0802704867 :  $8.95 
<br/><br/><label>LCCN: </label>76053639  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Black holes (Astronomy)<br/>Astronomy.
<br/><br/><label>LC Class. No.: </label>QB843.B55  / A84 1977 
<br/><br/><label>Dewey Class. No.: </label>523