Brzozowski, Richard J., and Richard E. Linhardt. “Competencies in Agriculural Mechanics As Replated to Selected Student Characteristics”. Journal of Agricultural Systems, Technology, and Management 4, no. 2 (April 1, 1989): 23–28. Accessed May 19, 2026. https://jastm.org/index.php/jastm/article/view/11913.