Johannes Jacobus Gerardus Wahlen
type: Person
birth date: 1847
death date: 1927
family name: Wahlen
given name: Johannes Jacobus Gerardus
main entity of page: https://data.bibliotheken.nl/.well-known/genid/4cb5f31574952490bf700088b2f6aa26
label: Wahlen, Johannes Jacobus Gerardus (1847-1927)