Retief, D.Jvan Wyk, C.WTurkstra, J2016-03-032016-03-031969Retief, D.H., van Wyk, C.W., Turkstra ,J.1969. A qualitative and comparative study of elements in teeth by neutron activation and high resolution gamma spectrometry. Journal of the dental association of South Africa;24(3):75-80http://hdl.handle.net/10539/19547KIMenSpectrophotometryToothRadiationArticle