birthhigh confidence
1855-00-00
1 linked sourceBorn 1855-00-00 · Died 1904-00-00
Heinrich Martens was born (1855). Source: Wikidata referenced P569 statement
Heinrich Martens died (1904). Source: Wikidata referenced P570 statement
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1855-00-00
1 linked source1904-00-00
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Accepted in the user-authorized Wikidata CC0 bulk publication run.
Q124357906$4f3e5603-4d44-004d-6bc5-049d8428d1bf; 1 source anchor · Wikidata · P569
Open original sourceQ124357906$70a8a796-4338-3bf8-7225-8585c5790356; 1 source anchor · Wikidata · P570
Open original source