Thammasom ฐิตินันท์, and Wongpriaw นภัสสร. 2024. “AN EXPERIMENT UTILIZING ROSELLE FOR ASSESSING GROUNDWATER QUALITY IN AN ENVIRONMENTAL CHEMISTRY CONTEXT FOR GENERAL CHEMISTRY 2 STUDENTS AT LOEI RAJABHAT UNIVERSITY”. Integrated Social Science Journal 4 (11):91-100. https://ojs.mbuslc.ac.th/index.php/issj/article/view/275.