OECD (2021), "04 Dairy products; birds' eggs; natural honey; edible products of animal origin, n.e.s.: 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/10.1787/81c1d650-en.