Physics of active galactic nuclei  proceedings of the International conference, Heidelberg, 3-7 June 1991  
edited by W. J. Duschl and S. J. Wagner                                                
 - Berlin  Springer-Verlag  1992 
 - xviii, 716p. 
<br/><br/><label>ISBN: </label>3-540-55554-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Active galactic nuclei<br/>Astronomy and astrophysics thesaurus<br/>Galactic nuclei
<br/><br/><label>Universal Decimal Class. No.: </label>524.64(082.1)  / PHY