Sivtceva–Maksimova, Praskovia Vasilievna, and Sakhayana Stepanovna Sivtseva. “TOWARD THE SCIENTIFIC RESEARCH OF A.E. KULAKOVSKY: FLORISTIC ANALYSIS OF THE NORTHERN REGION OF RUSSIA”. Amazonia Investiga 8, no. 21 (August 31, 2019): 365–371. Accessed September 19, 2025. https://mail.amazoniainvestiga.info/index.php/amazonia/article/view/113.