Kravets’, Nadiya. “The Pedagogical Conditions of Usage of Achievements of Ecological Education of Last Years of the XX Century under Modern Conditions”. Pedagogical Discourse0, no. 11 (March 27, 2012): 145-149. Accessed July 19, 2024. http://ojs.kgpa.km.ua/index.php/peddiscourse/article/view/791.