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Bản mẫu:To USD/data/2018

Bách khoa toàn thư mở Wikipedia


Tham khảo[sửa mã nguồn]

  • “The World Bank Official exchange rate (LCU per US$, period average)”. World Bank.
  • “ECB Euro reference exchange rate: US dollar (USD)”. European Central Bank.
  • “Yearly Average Currency Exchange Rates”. Internal Revenue Service. US Federal Government.


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