Ninua, T., T. Buachidze, and S. Khokhonishvili. “Mineral Qualities of Isabella Grapevine (Vitis Labrusca L.) Leaf”. The Journal of Nature Studies - Annals of Agrarian Science, vol. 19, no. 3, Nov. 2021, https://mail.journals.org.ge/index.php/aans/article/view/276.