Department of Geology;
Anna University;
Chennai 600 025;
India;
Centro de Investigaciones en Ciencias de la Tierra Universidad Autonoma del Estado de Hidalgo;
Ciudad Universitaria;
Hidalgo;
México;
Department of Geology;
School of Earth & Atmospheric Sciences;
University of Madras;
Guindy Campus;
Chennai 600 025;
India;
Central Ground Water Board;
NHR;
Dharamshala;
Himachal Pradesh 176 057;
India;