@book{191398,
	author = {Subramanian, P and Balasubrahmanyam, G},
	title = {Hydrogeology of Ponnani basin},
	publisher = {Central Ground Water Board, Ministry of Irrigation},
	year = {1980},
	address = {Coimbatore},
	note = {SIDA assisted ground water project in Noyil, Ponnani and Amaravati river basins, Tamil Nadu and Kerala states }
}