Measures of Double Stars Made with the 10 1/2 inch Clark-Repsold Refractor in the Years 1920-1925. (= Annalen van de sterrewacht te Leiden, deel XIV, derde stuk).
Bos, W. H. van den:
Published by Enschede en Zonen Haarlem, 1925
Language: English
Condition: Wie neu
Soft cover
From ralfs-buecherkiste, Herzfelde, MOL, Germany
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