OECD (2021), "49 Printed books, newspapers, pictures, printed products; manuscripts, typescripts, plans: 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/10.1787/48f599a2-en.

Export options: EndNote, Zotero, BibTeX, RefWorks, Procite, Import into RefWorks, Mendeley