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20. Commission des Positions et des Mouvements des Petites Planetes, des Cometes et des SatellitesArend, S. · Transactions of the International Astronomical Union · 1960
20. Commission Des Positions Et Des Mouvements Des Petites Planetes, Des Cometes Et Des SatellitesLeuschner, M.; Delporte, M. · Transactions of the International Astronomical Union · 1950
Commission 20: Positions and Motions of Minor Planets, Comets, And Satellites (Positions et Mouvements des Petites Planetes, des Cometes et des Satellites)Transactions of the International Astronomical Union · 1979
Commission 20: Positions and Motions of Minor Planets, Comets and Satellites (Positions et Mouvements des Petites Planetes, des Cometes et des Satellites)West, R. M. · Transactions of the International Astronomical Union · 1991
Commission No. 20: Positions and Motions of Minor Planets, Comets and Satellites (Positions Et Mouvements Des Petites Planetes, Des Cometes Et Des Satellites)Transactions of the International Astronomical Union · 1988
Commission 20: Positions and Motions of Minor Planets, Comets and Satellites (Positions et Mouvements des Petites Planètes, des Comètes et des Satellites)Transactions of the International Astronomical Union · 1973
Commission 20: Positions and Motions of Minor Planets, Comets, and Satellites (Positions et Mouvements des Petites Planètes, des Comètes et des Satellites)Transactions of the International Astronomical Union · 1985
28. Commission des Nebuleuses ExtragalactiquesBaade, W. · Transactions of the International Astronomical Union · 1960
Astronomy in VenezuelaRosenzweig, Patricia · Transactions of the International Astronomical Union · 2001
The Choice of Small TelescopesCrawford, David L. · Transactions of the International Astronomical Union · 2001
Individual Membership By Adhering CountryTransactions of the International Astronomical Union · 2001
Security of EquipmentOnuora, Lesley I. · Transactions of the International Astronomical Union · 2001
IV. Solar GranulationMuller, R. · Transactions of the International Astronomical Union · 1985
Small Radio Telescopes for EducationMaeda, Koitiro; Tokimasa, Noritaka · Transactions of the International Astronomical Union · 2001
AddendumMcCarthy, M. F. · Transactions of the International Astronomical Union · 1979