Galadima A, Lawal A, Muhammad R, Abubakar M. Local Rock Sample as Catalytic Material for Biodiesel Production via Transesterification of Used Cooking Oil. IJSGS [Internet]. 2023 Mar. 31 [cited 2026 Apr. 23];9(1):7. Available from: https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/392