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2,873 × 1,333 pixel
File size: 252 KB
MIME type: image/jpeg

The file "Peking_hardware_fig1sandclock.jpeg" has 1 identical duplication.

  1. Peking hardware fig1sandclock.jpeg . . Luwe (Talk | contribs) . . 16:02, 31 October 2017
  2. Peking hardware fig6 sandclock.jpeg . . Luwe (Talk | contribs) . . 17:40, 31 October 2017