INTERNATIONAL ASTRONOMICAL UNION SYMPOSIUM(155TH <br/><br/>
"Planetary nebulae. Proceedings of the 155th IAU symposium, Innsbruck, Austria, July 13-17, 1992" 

 - Dordrecht  Kluwer Academic publishers  1993 
 - Pbk. xxx p. + 604 
<br/><br/><label>ISBN: </label>0-7923-2440-0