Ukin СК. CERTAIN ISSUES OF THEORETICAL AND METHODOLOGICAL ANALYSIS OF THE LEGAL NATURE OF CUSTOMS SANCTIONED BY THE STATE IN THE LEGAL SYSTEM THE REPUBLIC OF KAZAKHSTAN DURING THE PERIOD OF SOVEREIGNTY AND INDEPENDENCE. Bulletin [Internet]. 2021 Dec. 30 [cited 2025 Mar. 21];4(67). Available from: https://vestnik.zqai.kz/index.php/vestnik/article/view/240