KHOZHAYEV MARAT. THE ROLE OF THE NATIONAL SYSTEM OF STANDARDIZATION IN IMPROVING THE QUALITY OF TOURIST SERVICES IN THE REPUBLIC OF KAZAKHSTAN. Interdisciplinary Science Studies, [S. l.], n. 2, 2023. Disponível em: https://ojs.scipub.de/index.php/ISS/article/view/1383. Acesso em: 29 apr. 2026.