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→Yupana
== Yupana ==
== Yupana ==
[[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]]
Yupana is an Incan counting device similar to an abacus.
Yupana is an Incan counting device similar to an abacus.