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Bukarest: Kriterion Verl., 1977
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Bucureşti: Bucovina, 1940
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Bucharest: Publ. House of the Acad. of the Rumanian People's Republic, 1964
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PERSEE Program, 1926
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Oxford University Press (OUP), 2008
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Oxford University Press (OUP), 2007
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Oxford University Press (OUP), 2004
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Oxford University Press (OUP), 2004
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Oxford University Press (OUP), 2004
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American Astronomical Society, 2003
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American Astronomical Society, 2002
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American Astronomical Society, 2001
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American Astronomical Society, 2001
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American Astronomical Society, 2000
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American Astronomical Society, 2000
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American Astronomical Society, 1999
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American Astronomical Society, 1998
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American Astronomical Society, 1998
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American Astronomical Society, 1998