1.

図書
図書
1. Preliminary programme for the fifteenth general assembly of the International Astronomical Union to the held at the University of Sydney, Sydney, N. S. W. Australia, 21-30 August, 1973
International Astronomical Union
出版情報: [Australia : The Local Organizing Committee, the 15th IAU General Assembly, 1973]
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2.

図書
図書
2. Preliminary announcement for the fifteenth general assembly of the International Astronomical Union to the held at the University of Sydney, Sydney, N. S. W. Australia, 21-30 August, 1973
International Astronomical Union
出版情報: [Australia : The Local Organizing Committee, the 15th IAU General Assembly, 1973]
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3.

図書
図書
3. Extraordinary general assembly of the International Astronomical Union : preliminary programme, Poland, Warzawa-Toruń-Kraków, 4-12 September, 1973
under the high protectorate of the chairman of the Councils of Ministers of the Polish People's Republic, Piotr Jaroszewicz
出版情報: [Warzawa-Toruń-Kraków : The Local Organizing Committee, 1973]
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4.

図書
図書
4. Preliminary announcement of the extraordinary general assembly of the International Astronomical Union, Poland, Warzawa-Toruń-Kraków, 4-12 September, 1973
International Astronomical Union. General Assembly
出版情報: [Warzawa-Toruń-Kraków : The Local Organizing Committee, 1973]
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