Queiroz, Manoel Moisés F. de, Ana Luca de A. dos Santos, and Simone D. Gomes. 2013. “Loss of Sediments and Nutrients through Runoff Steepness and Soybean Variety on Portuguesa River Basin”. Revista Verde De Agroecologia E Desenvolvimento Sustentável 8 (1):300-305. https://gvaa.com.br/revista/index.php/RVADS/article/view/2169.