Putri, C., Zulfarina, & Darmawati. (2026). ANTIBACTERIAL ACTIVITY TEST OF THE COMBINATION OF MANGOSTEEN (Garcinia mangostana L.) PERICARP EXTRACT AND CIPLUKAN (Physalis angulata L.) LEAF EXTRACT AGAINST Propionibacterium acnes AS A POSTER DESIGN FOR BIOLOGICAL TECHNOLOGY INNOVATION MATERIALS FOR GRADE X SMA. Algebra : Jurnal Pendidikan, Sosial Dan Sains, 6(2), 338-347. https://doi.org/10.58432/sybgy165