Yaxshiyeva Z.Z, & Jo’rayev. X.B. (2022). THE IMPORTANCE OF COLORIMETRY IN THE STUDY OF PB AND CD IONS IN WASTEWATER. Журнал естественных наук, 1(2(7), 116-119. извлечено от https://presedu.jdpu.uz/index.php/natscience/article/view/6064