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City Helsinki / Bern / / Company Pearson / BP / / Country Russia / Finland / Netherlands / / / Facility University of Helsinki / Pulkovo Astronomical Observatory / A.F. Ioffe Physical-Technical Institute / / Movie A.D. / / Organization A.F. Ioffe Physical-Technical Institute / University of Helsinki / / Person Lal / / Position director of the Observatory / / Product Morlet / / ProvinceOrState British Columbia / Alabama / / PublishedMedium Solar Physics / / Technology radiation / /
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