“SOIL SPATIAL VARIABILITY OF SOME SOIL PROPERTIES USING FACTOR ANALYSIS IN FEDERAL COLLEGE OF FORESTRY MECHANIZATION, KADUNA RESEARCH FARM”. FUDMA JOURNAL OF SCIENCES 4, no. 2 (October 7, 2020): 695–698. Accessed September 17, 2025. http://162.254.38.185/index.php/fjs/article/view/289.