Browsing by Author Umar, Garba
Showing results 1 to 1 of 1
| Issue Date | Title | Author(s) |
|---|---|---|
| 2013-07 | Regeneration of used engine oil | Isah, Abubakar; Abdulkadir, Mukhtar; Onifade, Kolawole; Musa, Umar; Umar, Garba; Bawa, Aisha; Sani, Yahaya |