1. Abbasi, S. A., Arya, D. S., Hameed, A. S., & Abbasi, N. (1996). Water quality of a typical river of Kerela: Punnurpuzha. Pollution Research, 15(2), 163–166.
2. Abel, P. D. (1989). Water pollution biology. Chichester: Ellis Horwood Ltd.
3. Adak, M. D., & Purohit, K. M. (2001). Status of surface and ground water quality of Mandiakudar – Part III: Correlaton coefficient and regression equations. Pollution Research, 20(2), 227–232.
4. Adholia, U. N., Kulshrestha, S. K., & Bhatnagar, A. (1991) Pollution status of river Khan, Kshipra and Chambal with reference to the abiotic characteristics. In Proceedings of national symposium planning for environment sustainable development. New Delhi.
5. Adoni, A. D., & Joshi, G. (1987). Physico-chemical regime of three fresh water bodies in and around Sagar (M.P.). Geobios New Reports, 6(1), 43–46.