Grygoryeva, V. G., and V. P. Samoday. “CURRENT STATUS OF LARCH PLUS TREES IN THE SUMY REGION”. Forestry and Forest Melioration, no. 131 (December 27, 2017): 66–77. Accessed November 22, 2024. http://forestry-forestmelioration.org.ua/index.php/journal/article/view/37.