@book{191629,
	author = {Ahnfors, Mats},
	title = {Studies on optimisation of ground water extraction structures and revitalisation of dug wells: SIDA Assisted ground water project in Noyil, Ponnani and Amaravati River basins, Tamil Nadu and Kerala Report 1:22},
	publisher = {Ministry of ahriculture and irrigation},
	address = {Coimbatore}
}