Xaydarov Ulug’bek and Burxonova Zarafruz Kobilovna 2024. STUDY OF COMPOSITE MATERIAL SAMPLES0. European International Journal of Multidisciplinary Research and Management Studies. 4, 02 (Feb. 2024), 115–119. DOI:https://doi.org/10.55640/eijmrms-04-02-19.