Willem Jan Claas
type: Person
description: Ph.D. Universiteit Utrecht 1951
alumni of: Utrecht University
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citations:
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  stated in qid: Q47757534
  retrieved: 2025-04-06
citations:
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  stated in qid: Q829984
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  entity updated at: 2026-05-03T16:20:22.557058+00:00Z
  entity created at: 2026-05-03T15:03:35.671641+00:00Z