“Effects of Continuous Use of Nitrogen Alone and In Combination With Phosphorus and Potassium Fertilizers on Plant Available Major and Secondary Nutrients in Soil under Wheat-Rice Intensive Crop Rotation: Impacts of Continuous Fertilizer Use on Soil Nutrient Availability and Crop Productivity”. 2017. Journal of Advances and Scholarly Researches in Allied Education 13 (2): 945-48. https://ignited.in/index.php/jasrae/article/view/6932.