Chowdhury, A.H. and Ahmed, R. 2012. Water, Sediment and Macrophyte Quality of Some Shrimp Culture Ponds and Freshwater Ecosystems of Koyra. Bangladesh Journal of Botany. 41, 1 (Jul. 2012), 35–41. DOI:https://doi.org/10.3329/bjb.v41i1.11080.