LUHVERCHIK V. EXTERNAL STUDIES AS THE FORM TO TRAIN TEACHING STAFF IN PRE-REVOLUTIONARY BELARUS. Вестник Полоцкого государственного университета. Серия E. Педагогические науки [Internet]. 2019Dec.23 [cited 2026Nov.10];(15):7-9. Available from: https://journals.psu.by/pedagogical/article/view/137