B.K. AGRAWAL AND PANKAJ SHARMA, Muneshwar Singh, R.H. Wanjari,. Biological N2 Fixation in Soybean and Contribution to Soil in a 40-Year-Old Experiment on Alfisols of Ranchi. Journal of the Indian Society of Soil Science, India, v. 62, n. 1, 2014. Disponível em: https://epubs.icar.org.in/index.php/JISSS/article/view/41246. Acesso em: 6 jun. 2026.