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22 bytes added ,  22:27, 5 February 2012
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[[File:Yupana-origins.png|300px|From http://en.wikipedia.org/wiki/File:Yupana.jpg]]
 
[[File:Yupana-origins.png|300px|From http://en.wikipedia.org/wiki/File:Yupana.jpg]]
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Yupana is an Incan counting device similar to an abacus.
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Yupana is an Incan counting device similar to an [[Activities/Abacus|abacus]].
    
[[File:Yupana.png|300px]]
 
[[File:Yupana.png|300px]]

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