Planetary nebulae : proceedings of the 180th Symposium of the International Astronomical Union, held in Groningen, The Netherlands, August, 26-30, 1996 - International Astronomical Union. Symposium Groningen, Netherlands : 1996); Habing, H. J. (Harm Jan), 1937-; Lamers, Henny J. G. L. M., 1941- (Dordrecht ; Boston : Kluwer Academic Publishers, 1997)
Includes bibliographical references and index.
Keywords: Planetary nebulae -- Congresses; Astrometry -- Congresses