a person in the record
Martinus Henricus de Wit
Doctoral advisors on Wikidata: Daan de Vries and Pieter Paulus Justinus Maria Schram.
Advisors on Wikidata
Wikidata's own statements of who supervised whom, kept apart from the record's theses and never counted with them.
Wikidata run graph-wikidata-20261008T220003Z