Inside the Sun Proceedings of the 121st Colloquium of the International Astronomical Union, Held at Versailles, France, May 22–26, 1989

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Wide Components in Double and Multiple Stars Proceedings of the 97th Colloquium of the International Astronomical Union held in Brussels, Belgium, 8–13 June, 1987

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Progress of Seismology of the Sun and Stars Proceedings of the Oji International Seminar Held at Hakone, Japan, 11–14 December 1989

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Internal Kinematics and Dynamics of Galaxies (International Astronomical Union Symposia, 100)

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Structure and Dynamics of the Interstellar Medium Proceedings of IAU Colloquium No. 120 Held on the Occasion of Guido's Jubilee in Granada, Spain, April 17-21, 1989

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Advances in Helio- and Asteroseismology: Proceedings of the 123th Symposium of the International Astronomical Union, Held in Aarhus, Denmark, July ... Astronomical Union Symposia, 123)

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Dynamics of Comets: Their Origin and Evolution Proceedings of the 83rd Colloquium of the International Astronomical Union, Held in Rome, Italy, 11–15 June 1984

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Physics of Classical Novae: Proceedings of Colloquium No. 122 of the International Astronomical Union. Held in Madrid, Spain, on 27–30 June 1989 (Lecture Notes in Physics)

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Cool Stars with Excesses of Heavy Elements Proceedings of the Strasbourg Observatory Colloquium Held at Strasbourg, France, July 3–6, 1984