Hasanah, Hayatul, Ratni Sirait, and Ridwan Yusuf Lubis. 2022. “PENGARUH KONSENTRASI AKTIVATOR H3PO4 TERHADAP KARBON AKTIF AMPAS TEBU : Hayatul Hasanah, Ratni Sirait, Ridwan Yusuf Lubis”. JOURNAL ONLINE OF PHYSICS 8 (1):11-15. https://doi.org/10.22437/jop.v8i1.20265.