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1 heading found for n 94121075
Heading | Type | Sample Title | |
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1 |
Hertzsprung, Ejnar, 1873-1967
Ejnar Hertzsprung Hertzsprung, Ejnar |
Personal | Brieven van Ejnar Hertzsprung (1873-1967) aan P.Th. Oosterhoff Zur Strahlung der Sterne drei Arbeiten |