The Search for Extraterrestrial Life: Recent Developments: Proceedings of the 112th Symposium of the International Astronomical Union Held at Boston University, Boston, Mass., U.S.A., June 18–21, 1984

Very High Angular Resolution Imaging: Proceedings of the 158th Symposium of the International Astronomical Union, held at the Women’s College, University of Sydney, Australia, 11–15 January 1993

Asteroids, Comets, Meteors 1993: Proceedings of the 160th Symposium of the International Astronomical Union, Held in Belgirate, Italy, June 14–18, 1993

Astronomy from Wide-Field Imaging: Proceedings of the 161st Symposium of the International Astronomical Union, Held in Potsdam, Germany, August 23–27, 1993

Pulsation, Rotation and Mass Loss in Early-Type Stars: Proceedings of the 162nd Symposium of the International Astronomical Union, Held in Antibes-Juan-Les-Pins, France, October 5–8, 1993