Campos-Magaña, Santos G. “Development of a High Precision Pneumatic Seeding System for Conservation Tillage for Medium Power Tractors”. REVISTA TERRA LATINOAMERICANA 25, no. 1 (March 1, 2007): 085–091. Accessed November 9, 2024. https://mail.terralatinoamericana.org.mx/index.php/terra/article/view/1442.