Hossain, M.M. et al. 2016. Nitrogen fixing efficiency and physiological characteristics of Azospirillum isolates from the paddy fields of North Bengal. Jahangirnagar University Journal of Biological Sciences. 3, 1 (Jun. 2016), 47–53. DOI:https://doi.org/10.3329/jujbs.v3i1.28277.