Xojimatov Umidbek Turgʻunboy oʻgʻli (2026) “LONG-LASTING POLYMER SEWER PIPES”, Ethiopian International Journal of Multidisciplinary Research, 13(4), pp. 844–847. Available at: https://www.eijmr.org/index.php/eijmr/article/view/6067 (Accessed: 12 April 2026).