Population Study in the High Natural Background Radiation Area in Kerala, India Nair, M. Krishnan ; Nambi, K. S. V. ; Amma, N. Sreedevi ; Gangadharan, P. ; Jayalekshmi, P. ; Jayadevan, S. ; Cherian, Varghese ; Reghuram, K. Nair Abstract Publication: Radiation Research Pub Date: December 1999 DOI: 10.2307/3580134 Bibcode: 1999RadR..152S.145N