ARSIĆ, Zvezdan. DIDACTICAL-METHODICAL ASSUMPTIONS AND CONDITIONS FOR SUCCESSFUL SOLUTION OF ECOLOGICAL PROBLEMS AT PRESCHOOL INSTITUTIONS. International Journal of Cognitive Research in Science, Engineering and Education (IJCRSEE), [S. l.], v. 1, n. 1, p. 76–86, 2013. Disponível em: https://ijcrsee.com/index.php/ijcrsee/article/view/54. Acesso em: 31 oct. 2025.