KALVĀNS, Ēriks. THE STRUCTURE OF LATGALE INHABITANTS’ FEELING OF HAPPINESS AND ITS SOCIO- DEMOGRAPHIC DETERMINATES. Education Reform in Comprehensive School: Education Content Research and Implementation Problems, Rezekne, Latvia, p. 5–13, 2016. DOI: 10.17770/ercs2015.1141. Disponível em: https://journals.ru.lv/index.php/PSPI/article/view/1141.. Acesso em: 26 dec. 2024.