Category:Stefano Keller

**Stefano Keller**
	Swiss Esperantist
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Date of birth	27 May 1953
Country of citizenship	Switzerland;
Occupation	Esperantist; esperantologist;
Native language	Hungarian;
Authority file
	Q12355342; VIAF ID: 309874547; GND ID: 1221807242; IdRef ID: 255644566; PLWABN ID: 9810625594805606
	Reasonator; Scholia; Wikidocumentaries; PetScan; statistics; WikiMap; Locator tool; KML file; Search depicted;

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