Lisnyak, A., & Torma, S. (2017). Agroecological Research of pH Value in Acidic Soils at Liming Absence. Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy, (15), 51-57. https://doi.org/10.26565/1992-4259-2016-15-07