KHANNA, VEENA, and POONAM SHARMA. 2011. “Potential for Enhancing Lentil (Lens Culinaris) Productivity by Co-Inoculation With PSB, Plant Growth-Promoting Rhizobacteria and Rhizobium”. The Indian Journal of Agricultural Sciences 81 (10). https://epubs.icar.org.in/index.php/IJAgS/article/view/11250.