Untangling an Accounting Tool and an Ancient Incan Mystery
Hacker News2016. 1. 5. 03:07
Untangling an Accounting Tool and an Ancient Incan Mystery
원문 기사 링크 : http://www.nytimes.com/2016/01/03/world/americas/untangling-an-accounting-tool-and-an-ancient-incan-mystery.html
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