DYVAK, Volodymyr V. IMPROVEMENT OF ECONOMIC COMPETENCE OF HEADS OF SECONDARY EDUCATION FOR EFFECTIVE ACTIVITY OF GENERAL SCHOOLS. Information Technologies and Learning Tools, [S. l.], v. 5, n. 1, 2010. DOI: 10.33407/itlt.v5i1.142. Disponível em: https://journal.iitta.gov.ua/index.php/itlt/article/view/142.. Acesso em: 2 may. 2024.