Yaxshiyeva, zuhra111. “СОРБЦИОННО-СПЕКТРОМЕТРИЧЕСКОЕ ОПРЕДЕЛЕНИЕ СВИНЦА”. Maktabgacha taʼlim Jurnali, vol. 3, no. Preschool education journal, Dec. 2021, https://pshedu.jdpu.uz/index.php/presedu/article/view/3991.