'... It is a joy to read it for its enormous amount of information, and the readable way in which the various Reports are presented. I wish that every astronomer would have ... this book. Certainly those who are interested in a wider field than just that of their own speciality would benefit greatly from having it on their desk. The Editor should be congratulated with his achievement.' Space Science Reviews, 62

• 4 Ephemerides/Ephémérides.- 5 Documentation & Astronomical Data/ Documentation & Données astronomiques.- 6 Astronomical Telegrams/Télégrammes astronomiques.- 7 Celestial Mechanics/Mécanique céleste.- 8 Positional Astronomy/Astronomie de Position.- 9 Instruments & Techniques/Instruments & Techniques.- 10 Solar Activity/Activité solaire.- 12 Radiation & Structure of the Solar Atmosphere/ Radiation & Structure de l’Atmosphère solaire.- 14 Atomic & Molecular Data/Données atomiques & moléculaires.- 15 Physical Study of Comets, Minor Planets & Meteorites/ Etude physique des Comètes, des petites Planètes & des Météorites.- 16 Physical Study of Planets & Satellites/ Etude physique des Planètes & Satellites.- 19 Rotation of the Earth/s/b Rotation de la Terre.- 20 Positions & Motions of Minor Planets, Comets & Satellites/ Positions & Movements des petites Planètes, des Comètes & des Météorites.- 21 Light of the Night Sky/Lumière du Ciel nocturne.- 22 Meteors & Interplanetary Dust/Météores & Poussière interplanétaire.- 24 Photographic Astrometry/Astrométrie photographique.- 25 Stellar Photometry & Polarimetry/ Photométrie & Polarimétrie stellaires.- 26 Double & Multiple Stars/Etoiles doubles & multiples.- 27 Variable Stars/Etoiles variables.- 28 Galaxies.- 29 Stellar Spectra/Spectres stellaires.- 30 Radical Velocities/Vitesses radiales.- 31 Time/L’Heure.- 33 Structure & Dynamics of the Galactic System/ Structure & Dynamique du Système galactique.- 34 Interstellar Matter/Matière interstellaire.- 35 Stellar Constitution/Constitution des Etoiles.- 36 Theory of Stellar Atmospheres/Théorie des Atmosphères stellaires.- 37 Star Clusters & Associations/Amas stellaires & Associations.- 38 Exchange of Astronomers/Echange des Astronomes.- 40 RadioAstronomy/Radioastronomie.- 41 History of Astronomy/Histoire de l’Astronomie.- 42 Close Binary Stars/Etoiles binaires serrées.- 44 Astronomy from Space/L’Astronomie à partir de l’Espace.- 45 Stellar Classification/Classiffication stellaire.- 46 Teaching of Astronomy/Enseignement de l’Astronomie.- 47 Cosmology/Cosmologie.- 48 High Energy Astrophysics/Astrophysique des hautes Energies.- 49 The Interplanetary Plasma & the Heliosphere/ s/b Plasma interplanétaire & Héliosphère.- 50 Protection of Existing & Potential Observatory Sites/ Protection des Sites d’Observatoires existants & potentiels.- 51 Bioastronomy: Search for Extraterrestrial Life/ Bioastronomie: Recherche de la Vie Extraterrestre.