Johan Christiaan Keller

Sources

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

1. 1
   WikidataJohan Christiaan Keller on Wikidata
2. 2
   WikidataJohan Christiaan Keller: Founded Wavin, on Wikidata
3. 3
   WikidataJohan Christiaan Keller: occupation, on Wikidata
4. 4
   WikidataJohan Christiaan Keller: citizenship, on Wikidata
5. 5
   WikidataWavin, Founder