Zaynobiddinova MA qizi, Sativaldiyev AK. Halol sertifikatlash jarayoni: muammolar va ba’zi yechimlar. SciEdu [Internet]. 2023Mar.26 [cited 2024Sep.27];4(3):204-11. Available from: https://openscience.uz/index.php/sciedu/article/view/5337