Tomar, R K S, K N Namdev, J S Raghu, and K P Tiwari. 2012. “Efficacy of Azotobactor and Plant Growth-Regulators on Productivity of Wheat (Triticum Aestivum) in Relation to Fertilizer Application”. The Indian Journal of Agricultural Sciences 65 (4). https://epubs.icar.org.in/index.php/IJAgS/article/view/18208.