Munurin millum rættingarnar hjá "Ídnaðarkollveltingin"

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bottur leggur aftrat {{Commonscat|Industrial revolution}}
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s (bottur leggur aftrat {{Commonscat|Industrial revolution}})
 
*[http://faculty.wcas.northwestern.edu/~jmokyr/castronovo.pdf Faculy.wcas.northwestern.edu]
*heimsøga 2 síða 23-29
{{Commonscat|Industrial revolution}}
 
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rættingar