Dey, A., Sarkar, P. and Das, A. 2019. Studies on Biodegradation of 4-Chlorophenol and 4-Nitrophenol by Isolated Pure Cultures. European Journal of Sustainable Development. 8, 4 (Oct. 2019), 281. DOI:https://doi.org/10.14207/ejsd.2019.v8n4p281.