%0 Journal Article %T Calcium oxide from Pomacea sp. shell as a catalyst for biodiesel production %A Margaretha, Yosephine %A Prastyo, Henry %A Ayucitra, Aning %A Ismadji, Suryadi %J International Journal of Energy and Environmental Engineering %V 3 %N 1 %P 1-9 %@ 2008-9163 %D 2012-12-17 %I Springer Berlin Heidelberg %~ DeepDyve