In the triennium under review, from the second half of 1984 to the first half of 1987, Commission 29 has sponsored or cosponsored the following IAU Conferences: Symp. 120, “Astrochemistry”, GOA, India, December 1985; symp. 122, “Circumstellar Matter”, Heidelberg PRG, June 1986; Symp. 132, “The impact of very high S/N Spectroscopy on Stellar Physics”, Paris, France, June-July 1987; Symp.123, “Advances in Helio and Asteroseismology”, Aarhus, Denmark, July 1986; Coll. 87, “Hydrogen Deficient Stars and Related Objects”, Bangclore, India, December 1985; Coll. 88, “Stellar Radial Velocities”, Schenectady, N.Y., U.S.A., October 1984; Coll. 90, “Upper Main Sequence Stars with Anomalous Abundances”, Crimea, May 1985; Coll. 92, “Physics of Be Stars”, Boukder, CO, U.S.A., August 1986; coll. 94, “Physics of Formation of Fell Lines Outside LTE”, capry, Italy, July 1986; Coll. 95, “Second Conference on Faint Blue Stars”, Tucson, AZ, U.S.A., June 1987; Coll. 102, “UV and X Ray Spectroscopy of Astrophysical and Laboratory Plasmas”, Beaulieu-sur-Mer, France, September 1987; Coll. 108, “Atmospheric Diagnostic of Stellar Evolution: Chemical Peculiarities, Mass Loss and Explosion”, Tokyo, Japan, September 1987.