File:Jacques Jacobus Polak.jpg
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![File:Jacques Jacobus Polak.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Jacques_Jacobus_Polak.jpg/493px-Jacques_Jacobus_Polak.jpg?20180331221820)
Size of this preview: 493 × 599 pixels. Other resolutions: 197 × 240 pixels | 395 × 480 pixels | 690 × 839 pixels.
Original file (690 × 839 pixels, file size: 92 KB, MIME type: image/jpeg)