“Similarity of Betula Borysthenica Klokov With Intraspecific Taxa of Betula Pubescens Ehrh”. CHORNOMORSKI BOTANICAL JOURNAL 9, no. 2 (June 12, 2013): 158–169. Accessed August 29, 2026. https://cbj.kspu.edu/index.php/cbj/article/view/380.