Technical, Economical and Ecological Estimation of Up-To-Date Combined Soil Tillage, Fertilising and Sowing Machines. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 212–217, 2006. DOI: 10.17770/etr2003vol1.2009. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3540.. Acesso em: 11 mar. 2026.