birthhigh confidence
1823-06-07
1 linked sourceBorn 1823-06-07 · Died 1912-11-10
Gerardus Koolen was born (1823-06-07). Source: Wikidata referenced P569 statement
Gerardus Koolen died (1912-11-10). Source: Wikidata referenced P570 statement
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1823-06-07
1 linked source1912-11-10
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Accepted in the user-authorized Wikidata CC0 bulk publication run.
Q106786694$b5403148-4783-028c-82e6-3a0b0e3c79f2; 1 source anchor · Wikidata · P569
Open original sourceQ106786694$c942b310-4089-f776-cd5c-d199e09adcd4; 1 source anchor · Wikidata · P570
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