Logah, V, N Ewusi - Mensah, E N Tetteh, C Quansah, and I Danso. 2013. “Seasonal Variations of Soil Microbial Biomass under Different Nutrient Management and Cropping Systems on a Ferric Acrisol in Ghana”. Journal of Tropical Agriculture 51 (1):98-104. https://jtropag.kau.in/index.php/ojs2/article/view/287.