Category:Willem Cornelis de Graaff

**Willem Cornelis de Graaff**
	Dutch university teacher
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Name in native language	Willem Cornelis de Graaff;
Date of birth	2 February 1877; Haarlem
Date of death	10 May 1944, 11 May 1944; Utrecht
Country of citizenship	Kingdom of the Netherlands;
Occupation	university teacher;
Employer	Utrecht University (Q62416144, promotion, 1916–1920); Leiden University; Leiden University (Faculteit der Wiskunde en Natuurwetenschappen, lecturer, 1910–); Leiden University (Dutch extraordinary professor, 1917–1920);
Native language	Dutch;
Authority file
	Q63003406; ISNI: 000000039529287X; VIAF ID: 289943283; Biografisch Portaal van Nederland ID: 78140493; Nationale Thesaurus voor Auteursnamen ID: 068135912
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Media in category "Willem Cornelis de Graaff"

The following 5 files are in this category, out of 5 total.