Shipman, Harry L. <br/><br/>
Black holes, quasars, and the universe 
Harry L. Shipman 
 - 2d ed. 
 - Boston  Houghton Mifflin  c1980 
 - viii, 344 p.  ill.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Black holes (Astronomy)<br/>Quasars<br/>Cosmology
<br/><br/><label>Dewey Class. No.: </label>523