Boiko, Tatiana, Vitaliy Botalov, and Aleksandr Romanov. “Substantiation of the Minimum Size of the Trial Area When Estimating the Yield of Chaga in Birch Plants of Perm Region”. Amazonia Investiga 8, no. 24 (November 21, 2019): 219-224. Accessed May 7, 2024. https://amazoniainvestiga.info/index.php/amazonia/article/view/974.