OECD (2021), "23 Residues and waste from the food industries; prepared animal fodder: Poland: 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/10.1787/0cfa8b8f-en.
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