THE EFFECT OF VARIATIONS IN CONCENTRATION OF CONCENTRATED SULFURIC ACID CATALYST ON THE DEGREE OF ETHYL LAURATE ESTERIFICATION RESULTS. MSJ [Internet]. 2020 Dec. 30 [cited 2026 Apr. 15];6(02):38-42. Available from: http://jurnal.polibara.ac.id/index.php/ojsdata/article/view/91