bn:03290883n
Noun Named Entity
Categories: Scientists from Amsterdam, 20th-century Dutch astronomers, 1891 births, European astronomer stubs, 1946 deaths
EN
Jan Woltjer  J. Woltjer jr.
EN
Jan Woltjer was a Dutch astronomer. Wikipedia
English:
astronomer
Definitions
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EN
Jan Woltjer was a Dutch astronomer. Wikipedia
Dutch astronomer Wikidata
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