Kõlli, Raimo, Karin Kauer, and Tõnu Tõnutare. “Topsoil Acidity of Forested Mineral Lands in Estonia”. Baltic Forestry 25, no. 2 (February 25, 2019): 213–222. Accessed June 25, 2024. https://balticforestryojs.lammc.lt/ojs/index.php/BF/article/view/219.