Streltsova T.A. Natural virus-free Grounds of the Altai mountains as longevity’s bioresource of valuable varieties and problems of potato degeneration: Al-Farabi Kazakh National University, Almaty, Kazakhstan. EJE [Internet]. 2018 Nov. 3 [cited 2026 Jul. 19];46(1):214-21. Available from: https://bulletin-ecology.kaznu.kz/index.php/1-eco/article/view/862