Proceedings of the Eighteenth General Assembly

I. Tribute to the Memory of Professor M.K.V. Bappu (1927 - 1982).- II. Inaugural Ceremony 17 August 1982.- Allocution de Mr John Xanthakis, President du Comite National d'Organisation.- Allocution de Mr Constantine Karamanlis, President de la Republique Hellenique (prononcee par Mr Constantin Goudas, Professeur a l'Universite de Patras).- Allocution de Mr George Maniatis, Recteur de I'Universite de Patras.- Allocution de Mr M.K.V. Bappu, President de l'UAI (prononcee par Mr E.K. Kharadze, Vice-President de l'UAI).- Allocution de Mr Pericles Theocaris, President de l'Academie d'Athenes.- III. Report on XVIIIth General Assembly, 17 and 26 August 1982.- Agenda.- First Session (17 August 1982).- Presidential Address.- Representatives of other Organisations.- Members deceased since last General Assembly.- Report of the Executive Committee (1979-82).- Report of the General Secretary.- Resolution A1: Ratification of Change in Adhering Bodies for China.- Report of Special Nominating Committee (1979-82).- Official Representatives of Adhering Organisations and Representatives on Nominating Committee.- Appointment of Finance Committee.- Appointment of Resolutions Committee.- Resolutions submitted by Commissions or by Associated Inter-Union Commissions.- Second Session (26 August 1982).- Report of the Finance Committee.- Unit of Contribution.- Budget 1983-85.- Resolutions adopted by the General Assembly.- A2 - Support of Meteor Data Center.- A3 - Contract Scheme for Visiting Lecturers.- A4 - Creation of Commission 51: Search for Extraterrestrial Life.- A5 - Change of Names of Commissions 26 and 34.- R1 - Comet Halley Days.- R2 - International Halley Watch (IHW).- R3 - 1980 Theory of Nutation.- R4 - Synoptic Solar Observations.- R5 - MERIT Campaign.- R6 - AAVSO Data of Cataclysmic Variables.- R7 - Astronomy and Astrophysics Abstracts.- R8 - Very Long Baseline Interferometry.- R9 - Protection of Radio Frequency Bands.- R10 - Sydney Observatory Instruments.- R11 - Endorsement of Commission Resolutions.- Commission Resolutions C1-C16.- Appointment of Special Nominating Committee.- New Members of the Union.- Appointment of Commission Presidents and Vice-Presidents.- Place and Date of XlXth IAU General Assembly.- Election of New Executive Committee.- Address by the Newly Elected President.- Closing Ceremonies.- IV. Reports of Meetings of Commissions/Comptes Rendus des Seances des Commissions.- 4 Ephemerides/Ephemerides.- 5 Documentation et Donnees Astronomiques/Documentation and Astronomical Data.- 6 Telegrammes Astronomiques/Astronomical Telegrams.- 7 Mecanique Celeste/Celestial Mechanics.- 8 Astronomie de Position/Positional Astronomy.- 9 Instruments et Techniques/Instruments and Techniques.- 10 Activite Solaire/Solar Activity.- 12 Radiation et Structure de l'Atmosphere Solaire/Radiation and Structure of the Solar Atmosphere.- 14 Donnees Atomiques et Moleculaires/Atomic and Molecular Data.- 15 L'Etude Physique des Cometes, des Petites Planetes et des Meteorites/Physical Study of Comets, Minor Planets and Meteorites.- 16 Etude Physique des Planetes et des Satellites/Physical Study of Planets and Satellites.- 19 Rotation de la Terre/Rotation of the Earth.- 20 Positions et Mouvements des Petites Planetes, des Cometes et des Satellites/Positions and Motions if Minor Planets, Comets and Satellites.- 21 Lumiere du Ciel Nocturne/Light of the Night Sky.- 22 Meteores et Poussiere Interplanetaire/Meteors and Interplanetary Dust.- 24 Astrometrie Photographique/Photographic Astrometry.- 25 Photometrie et Polarimetrie Stellaires/Stellar Photometry and Polarimetry.- 26 Etoiles Doubles et Multiples/Double Multiple Stars.- 27 Etoiles Variables/Variable Stars.- 28 Galaxies/Galaxies.- 29 Spectres Stellaires/Stellar Spectra.- 30 Vitesses Radiales/Radial Veolocities.- 31 L'Heure/Time.- 33 Structure et Dynamique du Systeme Galactique/Structure and Dynamics of the Galactic System.- 34 Matiere Interstellaire/Interstellar Matter.- 35 Constitution des Etoiles/Stellar Constitution.- 36 La Theorie des Atmospheres Stellaires/The Theory of Stellar Atmosphere.- 37 Amas Stellaires et Associations/Star Clusters and Associations.- 38 Echange des Astronomes/Exchange of Astromers.- 40 Radioastronomie/Radio Astronomy.- 41 Histoire de l'Astronomie/History of Astronomy.- 42 Etoiles Binaires Serrees/Close Binary Stars.- 44 L'Astronomie a partir de l'Espace/Astronomy from Space.- 45 Classification Stellaire/Stellar Classification.- 46 Enseignement de l'Astronomie/Teaching of Astronomy.- 47 Cosmologie/Cosmology.- 48 Astrophysique de Grande Energie/High Energy Astrophysics.- 49 Plasma Interplanetaire et Heliosphere/ The Interplanetary Plasma and the Heliosphere.- 50 Protection des Sites d'Observatoires Existants et Potentiels/ Identification and Protection of Existing and Potential Observatory Sites.- 51 Recherche de la Vie dans l'Univers/Search for Extraterrestrial Life.- Nomenclature du Systeme Planetaire/WORKING GROUP for Planetary System Nomenclature.- V. Report of the Executive Committee (1979-81).- VI. Astronomers Handbook.- 1. Short History of the International Astronomical Union.- 2. Administration and Finances of the Union.- 3. The International Scientific Unions.- 4. Services and Functions of the IAU.- 5. Publications of the International Astronomical Union.- 6. Meetings of the International Astronomical Union.- 7. Executive Committee 1982 - 1985.- 8. Statutes, By-laws.- 9. Working Rules.- 10. Rules for Scientific Meetings.- 11. List of Countries Adhering to the Union.- VII. Membership.- 1. Membership of Commissions.- 2. Alphabetical List of Members.