Seasonal variations in response of periphytic algal community to nutrient enrichment in the river Ganga (Varanasi, India)Arpana Yadav, Dhananjay Kumar, Ram Sharan Singh, Lalit K. Pandey and Jyoti RaiAnn. Limnol. - Int. J. Lim., 54 (2018) 32DOI: https://doi.org/10.1051/limn/2018025