Aronggear, P. R.; Santi, D.; Langsa, M. H.; Lisna Efiyanti, L. E. TRANSESTERIFICATION OF USED COOKING OIL USING A CATALYST FROM SAWN WOOD SAWN OF MATOA (Pometia pinnata): VARIATIONS OF MOLE RATIO OF METHANOL AGAINST OIL. jn 2024, 20, 1 - 7.