OECD (2021), "25 Salt; sulphur; earths and stone; plastering materials, lime and cement: Hungary: Harmonised System 2012", in International Trade by Commodity Statistics Volume 2020 Issue 4: Australia, Colombia, Czech Republic, France, Hungary, Luxembourg, Slovak Republic, OECD Publishing, Paris, https://doi.org/10.1787/b31d159a-en.