SITORUS, Marham et al. Study of Dehydration of Ricinoleic of Castor Oil By P2O5. Jurnal ILMU DASAR, [S.l.], v. 12, n. 2, p. 167-176, july 2011. ISSN 2442-5613. Available at: <https://jurnal.unej.ac.id/index.php/JID/article/view/64>. Date accessed: 27 apr. 2024.