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| Category:Sources by type |
| Modification date "Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by Semantic MediaWiki.
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11:25:09, 21 January 2016 + |
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| Subcategory of | Sources + , Historiography + , Information science + , Library science + , Research + |
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| Category:Primary sources + , Category:Secondary sources + | Subcategory of |
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