Shipman, Harry L. <br/><br/>
Black holes, quasars, and the universe / 
Harry L. Shipman 
 - 2nd ed. 
 - Boston :  Houghton Mifflin,  1980 
 - 344 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0395284996 
<br/><br/><label>LCCN: </label>79-049834 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Black holes (Astronomy)