1912-10-21/..1912-10-21/..1912-10-21/..1912-10-21/1918-11-221912-10-21/..1912-10-21/..1912-10-21/..Duration of the fourth internship of Samuel MokDuration of the third internship of Gerard Polak1912-10-21/1916-10-141912-10-21/..1912-10-21/1920-02-27Duration of the third internship of Wilhelmus Leonardus BukerDuration of the migration of Jacobus Hendrikus van Geelen to Antwerpen
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1912-10-21
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1912-10-21