Haydarova Muhtasarxon Odiljon qizi, Xolboyeva Shoxsanam Abdumalik qizi. CERTIFICATION, BASIC CONCEPTS AND TERMS FOR CERTIFICATION OF PRODUCTS AND SERVICES. ECZ [Internet]. 2022 Aug. 5 [cited 2024 Nov. 7];:8-9. Available from: http://econferencezone.org/index.php/ecz/article/view/1419