REFERENCES

• Adams, S., Titus, R., Pietersen, K., Tredoux, G., and Harris, C., 2001. Hydrochemical characteristics of aquifers near Sutherland in the Western Karoo, South Africa., J. Hydrol. 241 (1&2) (2001), pp. 91–103.
   Web of Science ®Google Scholar
• APHA, 2000. Standard Methods for the Examination of Water and Wastewater, . Washington DC, USA: American Public Health Association; 2000.
   Google Scholar
• Brown, C. E., 1993. Use of principal-component, correlation, and step wise multiple regression analyses to investigate selected physical and hydraulic properties of carbonate-rock aquifers., J. Hydrol. 147 (1993), pp. 169–195.
   Web of Science ®Google Scholar
• Cameron, E. M., 1996. Hydrogeochemistry of Fraser River, British Columbia: seasonal variation in major and minor components., J. Hydrol. 182 (1996), pp. 209–225.
   Web of Science ®Google Scholar
• Chinoy, N. J., Narayana, M. V., Sequeria, E., Joshi, S. M., Barot, J. M., Purohit, R. M., Parikh, D. J., and Ghodasara, N. B., 1992. Studies on effects of fluoride in 36 Villages of Mehsana District, North Gujarat., Fluoride 25 (3) (1992), pp. 101–110.
   Web of Science ®Google Scholar
• Dawdy, D. R., and Feth, J. H., 1967. Applications of factor analysis in study of chemistry of groundwater quality, Mojave River Valley, California., Water Resour. Res. 3 (1967), pp. 505–510.
   Web of Science ®Google Scholar
• Deer, W. A., Howie, R. A., and Zussman, J. Z., 1983. An Introduction to Rock Forming Minerals The English Language Book Society and Longman. 1983.
   Google Scholar
• Dhiman, S. D., and Keshari, A. K., 2003. "Quantifying uncertainties using fuzzy logic for groundwater driven contaminant exposure assessment.". In: Mishra, S., ed. Groundwater Quality Modeling and Management under Uncertainty. (Proc. World Water and Environmental Resources Congress, 23–26 June 2003, Philadelphia, USA). Philadelphia, USA: EWRI-ASCE Publication; 2003. pp. 236–247.
   Google Scholar
• Evans, C. D., Davies, T. D., Wigington, P. J., Tranter, M., and Kretser, W. A., 1996. Use of factor analysis to investigate processes controlling chemical composition of four streams in the Adirondack mountains, New York., J. Hydrol. 185 (1996), pp. 297–316.
   Web of Science ®Google Scholar
• Farnham, I. M., Johannesson, K. H., Singh, A. K., Hodge, V. F., and Stetzenbach, K. J., 2003. Factor analytical approaches for evaluating groundwater trace element chemistry data, Analytica Chimica Acta 490 (1&2) (2003), pp. 123–138.
   Web of Science ®Google Scholar
• Gaciri, S. J., and Davies, T. C., 1993. The occurrence and geochemistry of fluoride in some natural waters of Kenya., J. Hydrol. 143 (1993), pp. 395–412.
   Web of Science ®Google Scholar
• Gaumat, M. M., Rastogi, R., and Misra, M. M., 1992. Fluoride level in shallow groundwater in central part of Uttar Pradesh., Bhu-Jal News 7 (2&3) (1992), pp. 17–19.
   Google Scholar
• Grande, J. A., Gonzalez, A., Beltran, R., and Sanchez-Rodas, D., 1996. Application of factor analysis to the study of contamination in the aquifer system of Ayamonte-Huelva (Spain), Groundwater 34 (1) (1996), pp. 155–161.
   Web of Science ®Google Scholar
• Gupta, M. K., Singh, V., Rajwanshi, P., Agrawal, M., Rai, K., Srivastava, S., Shrivatava, R., and Dass, S., 1999. Groundwater quality assessment of Tehsil Kheragarh, Agra (India) with special reference to fluoride., Environ. Monitoring Assess. 59 (3) (1999), pp. 275–285.
   Web of Science ®Google Scholar
• Handa, B. K., 1975. Geochemistry and genesis of fluoride containing groundwater in India., Ground Water 13 (1975), pp. 275–281.
   Google Scholar
• Handa, B. K., 1988. Fluoride occurrence in natural waters in India and its significance., Bhu-Jal News 3 (2) (1988), pp. 31–37.
   Google Scholar
• Hem, J. D., 1986. "Study and interpretation of the chemical characteristics of natural water". In: US Geol. Survey Water Supply Paper 2254. 1986.
   Google Scholar
• Jacks, G., Bhattacharya, P., and Singh, K. P., 2000. "High fluoride groundwaters in India.". In: Bjerg, P. L., Engesgaard, P., and Krom, T. D., eds. Proc. Int. Conf. on Groundwater Research (Copenhagen, Denmark). Rotterdam, The Netherlands: A. A. Balkema; 2000. pp. 193–194.
   Google Scholar
• Jacks, G., Bhattacharya, P., Chaudhary, V., and Singh, K. P., 2005. Controls on the genesis of some high-fluoride groundwaters in India., Appl. Geochem 20 (2005), pp. 221–228.
   Web of Science ®Google Scholar
• Jeong, C. H., 2001. Effect of land use and urbanization on hydrochemistry and contamination of groundwater from Taejon area, Korea., J. Hydrol. 253 (1/4) (2001), pp. 194–210.
   Web of Science ®Google Scholar
• Kaiser, H. F., 1958. The varimax criterion for analytic rotation in factor analysis., Psychometrika 23 (1958), pp. 187–200.
   Web of Science ®Google Scholar
• Keshari, A. K., and Dhiman, S. D., 2001. "Genesis of fluoride contamination in the Western Indian Aquifers.". In: Ribeiro, L., ed. Future Groundwater Resources at Risk (FGR'01). (Proc. Third Int. Conf., Lisbon, Portugal, 25–27 June 2001), Theme 3: Point and non-point source pollution. 2001. pp. 1–8.
   Google Scholar
• Kloss, W. S., and Goebelbecker, J, 1992. "Dedolomitization and salt formation in a semi-arid environment.". In: Matthess, G., Frimmel, F., Hirsch, P., Schulz, H. D., and Usdowski, H.-E., eds. Progress in Hydrogeochemistry. New York., USA: Springer-Verlag; 1992. pp. 184–189.
   Google Scholar
• Krupanidhi, K. V. J. R., Srivastava, M. L., Doshi, S. K., Dhiman, S. C., and Goel, R. K., 1986. Water level and chemical data of national hydrograph network stations in Gujarat for the year 1978–84. Western Region, Jaipur, India: Central Ground Water Board/Ministry of Water Resources/Government of India; 1986.
   Google Scholar
• Kumar, A., 1998. Hydrogeological framework and ground water resources of Mehsana district, Gujarat. Central Ground Water Board, Government of India; 1998, Report.
   Google Scholar
• Kundu, N., Panigrahi, M. K., Tripathy, S., Munshi, S., Powell, M. A., and Hart, B. R., 2001. Geochemical appraisal of fluoride contamination of groundwater in the Nayagarh District of Orissa, India., Environ. Geol. 41 (2001), pp. 451–460.
   Web of Science ®Google Scholar
• Leung, D. C. W., and Hrudey, S. F., 1985. Removal of fluorides from water supplies. Alberta Environmental Standard and Approval Division., July 1985. 1985. p. 107.
   Google Scholar
• Liu, C. W., Lin, K. H., and Kuo, Y. M., 2003. Application of factor analysis in the assessment of groundwater quality in a blackfoot disease area in Taiwan., Sci. Total Environ. 313 (1&3) (2003), pp. 77–89.
   PubMed Web of Science ®Google Scholar
• Matthes, G., and Harvey, J. C., 1982. The Properties of Water. New York., USA: John Wiley & Sons Inc.; 1982.
   Google Scholar
• Mellout, A., and Collin, M., 1992. The principal component statistical method as a complimentary approach to geochemical methods in water quality factor identification; application to the coastal plain aquifer of Israel., J. Hydrol. 140 (1992), pp. 49–73.
   Web of Science ®Google Scholar
• Parkhurst, D. L., and Appelo, C. A. J., 1999. "User's guide to PHREEQC (Version 2)—A computer program for speciation, batch reaction, one dimensional transport and inverse geochemical calculations:". In: US Geol. Survey WRI-99–4259. Denver, Colorado, USA: US Geol. Surv.; 1999.
   Google Scholar
• Phadtare, P. N., 1981. Groundwater resources and development potential of Mehsana district, Gujarat. Central Ground Water Board, Government of India: Report; 1981.
   Google Scholar
• Pickering, W. F., 1985. The mobility of soluble fluorides in soils., Environ. Pollut. 9 (1985), pp. 281–308, Ser. B.
   Web of Science ®Google Scholar
• Plummer, L. N., Busby, J. F., Lee, R. W., and Hanshaw, B. B., 1990. Geochemical modelling of Madison Aquifer in parts of Montana, Wyoming, and South Dakota., Water Resour. Res. 26 (9) (1990), pp. 1981–2014.
   Web of Science ®Google Scholar
• Rao, N. S., 1997. The occurrence and behaviour of fluoride in the groundwater of the Lower Vamsadhara River basin, India., Hydrol. Sci. J. 42 (6) (1997), pp. 877–892.
   Web of Science ®Google Scholar
• Rao, N. V. R., Rao, N., Rao, S. P. K., and Schuling, R. D., 1993. Fluorine distribution in waters of Nalgonda district Andhra Pradesh, India., Environ. Geol. 21 (1993), pp. 84–89.
   Google Scholar
• Reghunath, R., Sreedhara Murthy, T. R., and Raghavan, B. R., 2002. The utility of multivariate statistical techniques in hydrogeochemical studies: an example from Karnataka, India., Water Res. 36 (10) (2002), pp. 2437–2442.
   PubMed Web of Science ®Google Scholar
• Srikanth, R., Viswanatham, K. S., Ahsai, F. F., Fishahatsion, A., and Asmellash, M., 2002. Fluoride in groundwater in selected villages in Eritrea (North East Africa), Environ. Monitoring Assess. 75 (2002), pp. 160–177.
   Web of Science ®Google Scholar
• Strunz, H., 1970. Mineralogische Tabellen, . Leipzig, Germany: Geest und Portig; 1970.
   Google Scholar
• Stuben, D., Zsolt, B., Chandrasekharam, D., and Karmakar, J, 2003. Arsenic enrichment in groundwater of West Bengal, India: geochemical evidence for mobilization of As under reducing conditions., Appl. Geochem. 18 (9) (2003), pp. 1417–1434.
   Web of Science ®Google Scholar
• Subbarao, C., Subbarao, N. V., and Chandu, S. N., 1996. Characterization of groundwater contamination using factor analysis., Environ. Geol. 28 (4) (1996), pp. 175–180.
   Google Scholar
• UNDP/CGWB (United Nations Development Programme/Central Ground Water Board), 1976. Groundwater surveys in Rajasthan and Gujarat, India, Tech. United Nations: Report; 1976.
   Google Scholar
• Wang, Y., Nahon, D., and Merino, E., 1993. Geochemistry and dynamics of calcrete genesis in semi-arid regions, Chem. Geol. 107 (1993), pp. 349–351.
   Web of Science ®Google Scholar
• Wang, Y., Ma, T., and Luo, Z., 2001. Geostatistical and geochemical analysis of surface water leakage into groundwater on a regional scale: a case study in the Liulin karst system, northwestern China., J. Hydrol. 246 (1/4) (2001), pp. 223–234.
   Web of Science ®Google Scholar
• Wedepohl, K. H., 1978. Handbook of Geochemistry, II-1, Section 9, Fluorine.. Berlin, Germany: Springer-Verlag; 1978.
   Google Scholar
• WHO, 1984. Guidelines for Drinking Water Quality, vol. 2, Health criteria and other supporting information. Geneva, Switzerland: World Health Organization; 1984.
   Google Scholar