File:Korsakov punch card.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:04, 19 April 2009 | 541 × 612 (197 KB) | Almikh | {{Information |Description={{en|1=Semen Korsakov's punch card he proposed in 1832}} |Source=Own work by uploader |Author=Almikh |Date= |Permission= |other_versions= }} <!--{{ImageUpload|full}}--> |
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