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[2] V.V.S. Gurunadha Rao, K. Subrahmanyam, P. Yadaiah, and R.L. Dhar, Pathline model for assessing migration of groundwater contaminants from an industrial area, Medak district, in "National seminar on Groundwater Resources Assessment and Management: Perspective for the 21st Century", July 23-24, organized by Department of Geophysics, Banaras Hindu University, Varanasi, 1998, p. 46.

[3] V.V.S. Gurunadha Rao, M. Thangarajan, and R.L. Dhar, Assessment and management of groundwater pollution: mass transport modelling studies, in "Proceeding of Workshop on Groundwater development in Hard rock Hydrosystems", organized by GWB(SR), Hyderabad, Aug. 16, 1997, pp. 44-58.

[4] V.V.S. Gurunadha Rao, M. Thangarajan, and R.L. Dhar, Assessment of contaminant migration through mass transport modelling, in "Workshop on water pollution: Assessment and Management", organized by Indo-German NachKontact Association (IGNA), Hyderabad, Oct. 9-10, 1997, pp. 108-122.

[5] R. Rajeshkumar, Ch. Sudarsan Raju, and V.V.S. Gurunadha Rao, Groundwater recharge estimates in CTRI Farm, Rajahmundry, East Godavari district, Andhra Pradesh, in "Proc. International conference of drinking water resources (Dec. 3-5, 1997)", organized by Central Leather Research Institute, Chennai, 2000, pp. 110-120.

[6] N. Subba Rao and V.V.S. Gurunadha Rao, Pathlines of pollutant migration in groundwater of the Visakhapatnam urban area, "Hydrological Processes", 13, 1999, pp. 1381-1389.

[7] N. Subba Rao, V.V.S. Gurunadha Rao, and C.P. Gupta, Groundwater pollution due discharge of industrial effluents in Venkatapuram area, Visakhapatnam, in "Proceedings of Workshop on Groundwater development in Hard rock Hydrosystems", organized by CGWB(SR), Hyderabad, Aug. 16, 1997, pp. 59-80.

[8] N. Subba Rao, V.V.S. Gurunadha Rao, and C.P. Gupta, Groundwater pollution due to discharge of industrial effluents in Venkatapuram Area, Visakhapatnam, in "Hydrogeology of Precambrian Terraines and Hard Rock Areas. Proceedings volume of seminar held on Feb. 3-4, 1997", B.P. Waghamare (ed.), Department of Studies in Geology, Karnatak University, Dharwad, 1999, pp. 107-119.

[9] N. Subba Rao, V.V.S. Gurunadha Rao, and C.P. Gupta, Pathlines of pollutant migration in groundwater of Visakhapatnam Urban area, in "Proc. International conference of drinking water resources (Dec. 3-5, 1997)", organized by Central Leather Research Institute, Chennai, 2000, pp. 239-245.