1910-05-23/1911-10-241910-05-23/..1910-05-23/1913-11-21Duration of the second internship of Johan Heinrich Röfekamp1910-05-23/..Duration of the internship of Heere SchappertDuration of the second internship of Meijer Roe1910-05-23/..1910-05-23/..Duration of the second internship of Salomon Swaalep1910-05-23/1911-06-23
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1910-05-23
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1910-05-23