Petukhova Д.О. and Kamaletdinov Д.С. 2022. EVALUATION OF THE HAPPINESS INDEX OF STUDENTS OF THE UDMURT REPUBLIC. Social’no-ekonomiceskoe upravlenie: teoria i praktika. 18, 2 (Jun. 2022), 29–35. DOI:https://doi.org/10.22213/2618-9763-2022-2-29-35.