OECD (2021), "32 Tanning or dyeing extracts; tannins and their derivatives; dyes, pigments, paints, putty etc.: 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/10.1787/13afe657-en.