Jan Arnold Ketelaar

	Date	Place	Source
Born :	1908-04-21	Amsterdam	-
Died :	2001-11-23	Lochem Nl	-
Degree/Occupation :	Prof.DR. Chemistry University of Amsterdam	-	-

Marriage	Children: see Helena Johanna 2
- Helena Johanna 2 Wehlburg	-

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Jan Arnold Ketelaar * 1907-04-21 -

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