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Different tasks of a census worker, published in Scientific American
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:01, 5 March 2008 | | 466 × 684 (27 KB) | Trh249 (Talk | contribs) | Different tasks of a census worker, published in Scientific American http://ei.cs.vt.edu/~history/50th/September.html |
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