Homer, I., and R. Villa. “Development and Evaluation of a Corn (Zea Mays L.) Seeding Unit for Animal or Human Traction”. Agro Sur 43, no. 3 (December 31, 2015): 41–50. Accessed November 15, 2024. http://581087.h2bexzbj.asia/index.php/agrosur/article/view/4117.