Labancz V, Rétháti G, Makó A, Szegi T. The examination of humic substances in soils and composts with high organic content with different methods. RARD [Internet]. 2018 Jul. 11 [cited 2024 May 17];6(1-2):71-6. Available from: https://www.iskolakultura.hu/index.php/rard/article/view/14073