THE IMPACT OF CONCENTRATION OF REGIONAL CONDITIONS AND PRODUCTION RESOURCES ON THE SOWING PRODUCTIVITY. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 86–91, 2015. DOI: 10.17770/etr2009vol1.1090. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3689.. Acesso em: 11 mar. 2026.