Chand Gupta, R., Chandna, P. and Kaushik , T. K. (2012) “Analysis of wetland Birds as seen in Yamuna river at Okhla (Delhi), Faridabad and Palwal Districts in Haryana, India”, Environment Conservation Journal, 13(3), pp. 7–14. doi: 10.36953/ECJ.2012.130302.