Muharani S, Zamhari M, Dewi E. Preparation of NaOH/CaO Superbase Catalysts from Limestone for the Biodiesel Production. ijcs [Internet]. 13Nov.2023 [cited 26Nov.2024];12(3):237-44. Available from: http://journal.unnes.ac.id/sju/ijcs/article/view/72750