a person in the record
Pier Groen
Doctoral advisors on Wikidata: Gerardus J. Sizoo and Hans Kramers; 1 doctoral student 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.
Students on Wikidata1
Wikidata's own statements of who supervised whom, kept apart from the record's theses and never counted with them.
- M.P.H. Weeninkborn 1925
Wikidata run graph-wikidata-20261008T172418Z