00495nam a22001337a 4500003000400000082002900004100002000033245019500053260006100248300000900309546001200318700001600330700001500346OSt  aINDIA/AGRI&IRR/1:17/1980  aBindu Madhav, U  aRadio isotope tracer technique for ground water flow studies in hard rocks: SIDA Assisted ground water project in Noyil, Ponnani and Amaravati River basins, Tamil Nadu and Kerala Report 1:17  acoimbatorebMinistry of agriculture and irrigationc1980  a12p.  aEnglish  aJoshi, O. P  aErikson, E