Findings:
- Jacobus
- Jacobus (user)
- Jacobus tenBroek
- Jacobus Arminius
- Jacobus Henricus van't Hoff
- Piet Joubert
- Joseph Joubert
- Hendrik Petrus Berlage
- Petrus Josephus Wilhelmus Debye
- Petrus (user)
- Petrus de Marsiliers
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