Active galactic nuclei 
edited by C. Hazard and S. Mitton                                                    
 - Cambridge  Cambridge University Press  1979 
 - [various pagings.] 
<br/><br/><label>ISBN: </label>0-521-22494-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Galaxies<br/>Nuclear astrophysics<br/>Quasars
<br/><br/><label>Universal Decimal Class. No.: </label>524.744(082.1)  / ACT