TI  - Optimization of colour pigments removal from palm oil using activated ogbunike kaolinite
AU  - NNANWUBE, I.A.
AU  - OKAFOR, V.N.
AU  - OBIBUENYI, J.I.
AU  - ONUKWULI, O.D.
AU  - AJEMBA, R.O.
SO  - Sigma Journal of Engineering and Natural Sciences 2020;38:253-263.
DO  -