Adebajo, S. O.; Akintokun, A. K.; Ojo, A. E.; Egbagbe, D. M.; Akintokun, P. O.; Adebajo, L. O. Biosurfactant Production by Rhizospheric Bacteria Isolated from Biochar Amended Soil Using Different Extraction Solvents. App. Envi. Res. 2019, 41, 72-82.