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Hafiz Ramadhan; Muhammad Arsyad; Putri Indah Sayakti. PHYTOCHEMICAL SCREENING AND ANTIBACTERIAL ACTIVITIES OF 70% ETHANOL EXTRACTS OF KALANGKALA SEEDS (Litsea Angulata Bl.) ON BACTERIA CAUSES ACNEPropionibacterium Acnes. Borneo J of Pharmascientech 2020, 4, 60 - 70.