OPTIK TOLA QO’SHILGAN YORUG’LIK O’TKAZUVCHI BETONNI EKSPERIMENTAL O’RGANISH. IJRS [Internet]. 2024 Sep. 30 [cited 2024 Nov. 15];2(9):82-7. Available from: https://uzresearchers.com/index.php/ijrs/article/view/3984