Durairaj, C., & Venugopal, M. S. (2012). Combined effect of margosa oil and diflubenzuron on tobacco caterpillar (Spodoptera litura) and gram podborer (Helicoverpa armigera). The Indian Journal of Agricultural Sciences, 65(4). https://epubs.icar.org.in/index.php/IJAgS/article/view/18246