OM, HARI, S P SINGH, J K SINGH, R N SINGH, M A ANSARI, R L MEENA, and BRIJESH YADAV. 2014. “Productivity, Nitrogen Balance and Economics of Winter Maize (Zea Mays) As Influenced by QPM Cultivars and Nitrogen Levels”. The Indian Journal of Agricultural Sciences 84 (2): 306–8. https://doi.org/10.56093/ijas.v84i2.38057.