OECD (2021), "27 Mineral fuels, mineral oils and products of their distillation; bituminous substances etc.: Norway: Harmonised System 2012",
in
International Trade by Commodity Statistics Volume 2020 Issue 5: Estonia, Israel, Latvia, Lithuania, Netherlands, Norway, Poland,
OECD Publishing, Paris,
https://doi.org/10.1787/e6ec3eb2-en.
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