Transactions of the International Astronomical Union: Proceedings of the Twentieth General Assembly Baltimore 1988 (International Astronomical Union Transactions, 20B)

The XXth General Assembly of the International Astronomical Union was held in Baltimore, Maryland USA from August 02 to 11, 1988. The Inaugural Ceremony on August 02 was held in the presence of representatives of the United States Governn:ent, t~e S~ate of Maryland, the City of Baltimore and the host institution -the Johns Hopkins Umverslty- as well as of the National and Local Organising Committees. The scientific programme maintained the high standards of the Union and the scientific proceedings may be found either in this volume or in volume 8 of Highlights of Astronomy. The scientific programme was organised by the 40 Commission Presidents and coordinated by the General Secretary (1985-1988), Dr. J.-P. Swings. The local arrangements were effectively made through the National Organising Committee under the Chairmanship of Prof. F. Drake and the Local Organising Committee under the co-Chairmanship of Prof. A. Oavidsen and Dr. R. Giacconi. The smooth day to day operation of the meeting resulted from the incomparable dedication of Karen Weinstock and Harold Screen. Front Matter....Pages i-xv Inaugural Ceremony 2 August 1988....Pages 1-18 Extraordinary General Assembly....Pages 19-19 Twentieth General Assembly....Pages 21-77 Report of the Executive Committee 1985—1988....Pages 79-101 Reports of Meetings of Commissions....Pages 103-372 Functions and Statutes of the Union....Pages 373-408 Membership....Pages 409-891 IAU Style Book....Pages 892-950 Proceedings of the Twentieth General Assembly, Baltimore 1988