Okorie, E., E. Obalum, S., & Singh, L. (2017). The potential of fermented cottonseed oil-mill effluent as inexpensive biofertilizers and its agronomic evaluation on medium-textured tropical soil. International Journal of Recycling of Organic Waste in Agriculture, 6(2). https://doi.org/10.1007/s40093-017-0158-6