Северна Америка: Разлика между версии

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* {{cite web | last = Middle Tennessee State University | year = 2006 | url = http://www.sciencedaily.com/releases/2006/04/060425183740.htm | title = Kennewick Man Skeletal Find May Revolutionalize Continent's History | work = sciencedaily.com | publisher = ScienceDaily | accessdate = 2012-08-13 август 2012 | lang = en}}
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* {{cite web | publisher = msn.com | year = 2009 | title = Encarta, „Norteamérica“ | url = http://mx.encarta.msn.com/encyclopedia_761562468/Norteamérica.html | archiveurl = http://www.webcitation.org/query?id=1257013693874868 | archivedate = 2009-10-31 | deadurl = yes | lang = es}}
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