Anyanwu, C.U., S.K.C. Obi, and B.N. Okolo. 2011. “Production of Surface Active Glycolipid by Serratia Marcescens NSK-1 Isolated from Petroleum Contaminated Soil”. Our Nature 8 (1):1-11. https://doi.org/10.3126/on.v8i1.4308.