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| Category:Social systems |
| 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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16:57:19, 15 January 2012 + |
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| Subcategory of | Systems + , Sociology + |
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| Category:Community + , Category:Schools of thought + | Subcategory of |
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