Jan Hendrikus Kok

Sources

The numbers on this page point here. Each one links to the record it came from.

1. 1
   WikidataJan Hendrikus Kok on Wikidata
2. 2
   WikidataJan Hendrikus Kok: Founded Kok, on Wikidata
3. 3
   WikidataJan Hendrikus Kok: occupation, on Wikidata
4. 4
   WikidataKok, Founder