Nomau, A. . (2018) “Evaluation of the Effect of Price Variations of Inorganic Fertilizer on Farmer’s Productivity in Giwa L. G. A of Kaduna State Nigeria”., Zaria journal of Educational Studies (ZAJES), 18(1), pp. 49–56. Available at: https://zarjes.com/ZAJES/article/view/261 (Accessed: 18 October 2024).