KUALITAS DAMAR POHON POOTI (Hopea gregaria) BERDASARKAN UJI VISUAL, BILANGAN ASAM, DAN KADAR ABU: Quality of Pooti Dammar Resin (Hopea gregaria) Based on Visual Test, Acid Number, and Ash Content. perennial. 2021;17(1):1-4. doi:10.24259/perennial.v17i1.12646