Sunspot drawing of 1963-4-22

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https://doi.org/10.7891/e-manuscripta-93521



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1963-04-22
07:15
Hs 1304.5:1960
https://doi.org/10.7891/e-manuscripta-93521
Observer : Sergio Cortesi
Seeing (SIDC) : 4
No group