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Soroban (Dutch Wikipedia)

Analysis of information sources in references of the Wikipedia article "Soroban" in Dutch language version.

refsWebsite
Global rank Dutch rank
1ryerson.ca
low place
low place

ryerson.ca

ee.ryerson.ca

  • (en) The Abacus: A Brief History 1. ryerson (11 augustus 2010). Geraadpleegd op 26 januari 2012. "Circa 1600 AD, use and evolution of the Chinese 1/5 abacus was begun by the Japanese via Korea."