de
523 Einzelne Himmelskörper und Himmelsphänomene
523.7 Sonne
523.7021 Tabellarische und verwandte Materialien 523.70284 Heliografen—Astronomie, . . . 523.71 Konstanten und Dimensionen 523.72 Optische, elektromagnetische, radioaktive, thermische Phänomene 523.73 Bewegungen 523.74 Photosphäre 523.75 Chromosphäre und Korona 523.76 Sonnenkern 523.78 Finsternisse
Dewey Decimal Classification
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