[1]
Khairunnisa, H.H., Sari , S. and Sukmawardana , Y. 2025. Application of Project-Based Worksheets on the Utilization of Rice Husk Charcoal Adsorbent to Reduce Groundwater Hardness in Develoving Students’ Scientific Performance. IJCER (International Journal of Chemistry Education Research). 9, 2 (Oct. 2025), 93–107. DOI:https://doi.org/10.20885/ijcer.vol9.iss2.art1.