THEORETICAL DESCRIPTION OF SOCIAL STRATIFICATION AND SOLIDARITY AND COOPERATION RELATIONS IN THE PHILOSOPHICAL TEACHINGS OF ABU RAYHAN BERUNI. World Bulletin of Social Sciences, [S. l.], v. 14, p. 31–32, 2022. Disponível em: https://www.scholarexpress.net/index.php/wbss/article/view/1405. Acesso em: 18 apr. 2026.