А.Д Б. I.V. YEROFEYEVA’STHEORETICAL AND METHODOLOGICAL PRINCIPLES AND HISTORICAL VIEWS IN THE STUDY OF THE EPISTOLARY HERITAGE OF THE RULING ELITE OF THE KAZAKH SOCIETY OF THE XVIII-XIX CENTURIES. tar [Internet]. 2022Dec.2 [cited 2024Jul.3];3(74). Available from: https://bulletin-histsocpolit.kaznpu.kz/index.php/ped/article/view/1126