Rono, K., O. Manyala, J. and Lusega, D. 2018. Effect of Iron Amino Acid Chelate Supplemented Fish Feeds on Nutrients Composition of Spinach (Spinacia oleracea) in an Aquaponic System in Kenya. International Journal of Sciences: Basic and Applied Research (IJSBAR). 37, 2 (Feb. 2018), 162–172.