File:Collins H. Johnston.jpg
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![File:Collins H. Johnston.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Collins_H._Johnston.jpg/583px-Collins_H._Johnston.jpg)
Size of this preview: 583 × 600 pixels. Other resolutions: 233 × 240 pixels | 467 × 480 pixels | 747 × 768 pixels | 1,083 × 1,114 pixels.
Original file (1,083 × 1,114 pixels, file size: 172 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:24, 7 July 2011 | ![]() | 1,083 × 1,114 (172 KB) | commons>Materialscientist | grayscale, contrast, sharpness |
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