PUBLICATIONS DE L'OBSERVATOIRE ASTRONOMIQUE DE L'UNIVERSITÉ DE TARTU (DORPAT)
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Ernst Öpik
Publisher: [s.n.].
Published: 1940
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Wilhelm Anderson, Tartu Ülikool, Eesti Vabariigi Tartu Ülikool
Published: 1937
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Ernst Öpik
Publisher: [s.n.].
Published: 1927
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Publisher: [s.n.].
Published: 1938
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Ernst Öpik
Publisher: [s.n.].
Published: 1929
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Jegor Mielberg
Publisher: [s.n.].
Published: 1932
