4. Astronomy and Astrophysics
  5. Astronomy

John G. Hagen

Astronomy and Astrophysics – Astronomy

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A New Observatory (Valkenburg, Holland)

Astronomy and Astrophysics – Astronomy
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A specimen chart from the Atlas Stellarum Variabilium.

Astronomy and Astrophysics – Astrophysics
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Anfrage über einen Kometen von 1917

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Atlas of Variable Stars

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Bemerkungen zu der Notiz betreffend einen Stern bei Y Lyrae in AN 5056

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Profile ID: LFWR-SCP-P-441015

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