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writing a summary about: Results of observations of the total solar eclipse of June 29, 1927 - 1: Photometry of the flash spectrum by Antonie Pannekoek #1928 ( discussed with @erkan_yilmaz ) !reading
writing a summary about: Results of observations of the total solar eclipse of June 29, 1927 - 1: Photometry of the flash spectrum by Antonie Pannekoek #1928 ( discussed with @erkan_yilmaz ) !reading