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 (June 29, 2016): 5–13. Accessed June 13, 2026. https://journals.ru.lv/index.php/PSPI/article/view/1141.