Lisnyak, A. and 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 (Jan. 2017), 51-57. DOI:https://doi.org/10.26565/1992-4259-2016-15-07.