B.SH.Qosimov and B.A.Tursunov (2025) “PORTLANDSEMENT ISHLAB CHIQARISHNING ISTIQBOLLARI”, ZAMONAVIY TA’LIMDA FAN VA INNOVATSION TADQIQOTLAR, 3(1), pp. 53–58. Available at: http://zamtadqiqot.uz/index.php/zt/article/view/1026 (Accessed: 26 February 2025).