a person in the record
Gerrit Roorda
Doctoral advisors A. van Streun, Francisca Pauline Vos, and Martin J. Goedhart on Wikidata.
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-20261015T220004Z