C, Njoku, Mbah, C.N., and Okonkwo, C. I. 2012. “Effect of Rice Mill Wastes Application on Selected Soil Physical Properties and Maize Yield (Zea Mays l.) On an Ultisol in Abakaliki Southeastern Nigeria”. Global Journal of Food and Agribusiness Management 3 (1):151-59. https://elixirpublishers.in/index.php/asst/article/view/2673.