Kumar D, Purakayastha TJ, Shivay YS. Long-term Effect of Organic Manures and Biofertilizers on Physical and Chemical Properties of Soil and Productivity of Rice-Wheat System. IJBSM [Internet]. 2015 Apr. 7 [cited 2026 Jan. 11];6(Apr, 2):176-81. Available from: https://ojs.pphouse.org/index.php/IJBSM/article/view/678