APA
Ahnfors M., .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. Coimbatore: Ministry of ahriculture and irrigation.
Chicago
Ahnfors Mats, .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. Coimbatore: Ministry of ahriculture and irrigation.
Harvard
Ahnfors M., .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. Coimbatore: Ministry of ahriculture and irrigation.
MLA
Ahnfors Mats, .Coimbatore: Ministry of ahriculture and irrigation. .