Subramanian, P creator Balasubrahmanyam, G Sanjay Mukharya Keerthiseelan, K Nazimuddin, M Srinivasan, P text Coimbatore Central Ground Water Board, Ministry of Irrigation 1980 monographic 108p. SIDA assisted ground water project in Noyil, Ponnani and Amaravati river basins, Tamil Nadu and Kerala states English INDIA/AGRI&IRR/1:20