Drozdenko T, Fedorov S, Kek I. SEASONAL DYNAMICS OF PHYTOPLANKTON AND SOME HYDROCHEMICAL INDICATORS OF THE PEIPSI-PSKOV LAKE. ETR [Internet]. 2021 Jun. 16 [cited 2024 Nov. 23];1:50-4. Available from: https://journals.ru.lv/index.php/ETR/article/view/6557