Grigg, Felix John Theodore2011-03-162022-10-252011-03-162022-10-2519221922https://ir.wgtn.ac.nz/handle/123456789/23370The work outlined in this thesis comprises the chemical analysis of the waters of the principal lakes and streams of the Thermal District (Rotorua - Taupo) of New Zealand, and the estimation of the radium emanation and radium content of certain of the lakes and springs.pdfen-NZText