Parvez, M.A.K., Marzan, M., Liza, S.M. and Ahmed, Z.U. 2014. Levels of reactive nitrogen in surface and ground water samples obtained from different parts of Bangladesh. Journal of Bangladesh Academy of Sciences. 38, 1 (Aug. 2014), 75–82. DOI:https://doi.org/10.3329/jbas.v38i1.20214.