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The Spiral Structure of Our Galaxy
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  • English
  • Year: 1970
  • Author: J. H. Oort (auth.), W. Becker, G. Contopoulos (eds.)
Early Evolution of the Universe and its Present Structure
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  • English
  • Year: 1983
  • Author: J. H. Oort (auth.), G. O. Abell, G. Chincarini (eds.)
Clusters and Groups of Galaxies: International Meeting Held in Trieste Italy, September 13–16, 1983
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  • English
  • Year: 1984
  • Author: J. H. Oort (auth.), F. Mardirossian, G. Giuricin, M. Mezzetti (eds.)
Chaos in Astronomy: Conference 2007
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  • English
  • Year: 2009
  • Author: G. Contopoulos (auth.), G. Contopoulos, P. A. Patsis (eds.)
Chaos in Astronomy: Conference 2007
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  • English
  • Year: 2009
  • Author: G. Contopoulos (auth.), G. Contopoulos, P. A. Patsis (eds.)
Probleme der Technischen Magnetisierungskurve: Vorträge Gehalten in Göttingen im Oktober 1937
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  • German
  • Year: 1938
  • Author: R. Becker, K. J. Sixtus, W. Döring, M. Kersten, J. L. Snoek, G. Richter, H. Schulƶe, G. Masing, W. Gerlach, H. Lange (auth.), R. Becker (eds.)
Transactions of the International Astronomical Union: Proceedings of the Fifteenth General Assembly Sydney 1973 and Extraordinary General Assembly Poland 1973
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  • English
  • Year: 1974
  • Author: Prof. Dr. G. Contopoulos, A. Jappel (auth.), Prof. Dr. G. Contopoulos, A. Jappel (eds.)
Extragalactic Radio Sources
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  • English
  • Year: 1982
  • Author: J. H. Oort (auth.), David S. Heeschen, Campbell M. Wade (eds.)
Arithmetic Algebraic Geometry
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  • English
  • Year: 1991
  • Author: Gerard van der Geer, Frans Oort, Jozef Steenbrink (auth.), G. van der Geer, F. Oort, J. Steenbrink (eds.)