ZAHOOR UL HASSAN2*, M. M. B. M. I. M. Regional Variations in Agricultural Productivity- A Study of Uzbekistan. Journal of Phytology, [S. l.], v. 3, n. 6, 2011. Disponível em: https://updatepublishing.com/journal/index.php/jp/article/view/2273. Acesso em: 20 may. 2024.