HYDROGEOCHEMICAL ZONAL DEMARCATION OF GROUNDWATER IN THE GNEISS AQUIFER, TIRUCHENGODE TALUK, NAMAKKAL DISTRICT, TAMILNADU, INDIA

HYDROGEOCHEMICAL ZONAL DEMARCATION OF GROUNDWATER IN THE GNEISS AQUIFER, TIRUCHENGODE TALUK, NAMAKKAL DISTRICT, TAMILNADU, INDIA by S.M.Mazhar Nazeeb Khan and A.Ravi Kumar