%0 Journal Article %A Widiarti, Nuni %A Ni’mah, Yatim-Lailun %A Bahruji, Hasliza %A Prasetyoko, Didik %D 2019 %J Journal of Renewable Materials %@ 2164-6341 %V 7 %N 10 %P 915--939 %T Development of CaO From Natural Calcite as a Heterogeneous Base Catalyst in the Formation of Biodiesel: Review %M doi:10.32604/jrm.2019.07183 %U http://www.techscience.com/jrm/v7n10/30589