The stellar populations of galaxies  proceedings of the 149th symposium of the International Astronomical Union, held in Angra Dos Reis, Brazil, August 5-9, 1991 
edited by B. Barbuy and A. Renzini                                                  
 - Dordrecht  Kluwer Academic  1992 
 - xxii, 521p. 
 - IAU Symposium; no 149 .
<br/><br/><label>ISBN: </label>0-7923-1699-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Active Galactic Nuclei<br/>Active Galaxies<br/>Astronomy and Astrophysics Thesaurus<br/>Galaxies
<br/><br/><label>Universal Decimal Class. No.: </label>082.2:52  / IAU-S149