Hevelius, Johannes

 
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Drawings of sunspots, 3-16 May 1644.
Drawings of sunspots, 3-16 May 1644.
Drawings of sunspots, 27 August - 8 October 1644.
Drawings of sunspots, 27 August - 8 October 1644.
Drawings of sunspots, 28 October 1642.
Drawings of sunspots, 28 October 1642.
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