Indah Monica, Nurhamidah and elvinawati 2023. PENGEMBANGAN E-LKPD BERBASIS PROBLEM BASED LEARNING PADA MATERI HUKUM-HUKUM DASAR KIMIA. ALOTROP. 7, 1 (Jun. 2023), 33–43. DOI:https://doi.org/10.33369/alo.v7i1.28231.