JUODAGALVIS, Jonas. Ecological Education in Socialist Society. Problemos, [S. l.], v. 31, p. 27–34, 1984. DOI: 10.15388/Problemos.1984.31.6447. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/6447. Acesso em: 26 oct. 2025.