GEOPHYSICAL TECHNIQUES FOR AQUIFEER CHARACTERESTICS STUDIES-A CASE STUDY OF TAVANUR GRAMA PANCHAYAT,MALAPPURAM,KERALA - APARNA HARIPRIYA MANCHIMA .S.LAL MEGHA.P P; SAJEENA.S (Guide); NAMITHA.M.R (TAVANUR DEPARTMENT OF IRRIGATION AND DRAINAGE ENGINEERING, 2023)