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searching for Ejnar Hertzsprung 1 found (63 total)

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Dieter B. Herrmann (1,451 words) [view diff] exact match in snippet view article find links to article

(Akzent-Reihe [de] vol. 50) Urania-Verlag, Leipzig Jena Berlin 1981 Ejnar Hertzsprung. Pionier der Sternforschung. with 41 illustrations, Springer, Berlin-Heidelberg