Boiko, Olha. “Historiographic Researches to the Process of Illiteracy Liquidation (1920-1930-S)”. Pedagogical Discourse0, no. 15 (October 9, 2013): 72-75. Accessed April 25, 2024. https://ojs.kgpa.km.ua/index.php/peddiscourse/article/view/595.