MAHALINGAM.P.U, MUNIAPPAN.K, ARUMUGAM.N, and SENTHIL MURUGAN.G. “USE OF AZOLLA BIOFERTILIZER IN POT CULTURE STUDIES WITH PADDY CROP ORYZA SATIVA”. Innovare Journal of Agricultural Sciences, vol. 2, no. 3, Oct. 2014, pp. 1-6, https://innovareacademics.in/journals/index.php/ijags/article/view/2286.