Sodium, chlorides, and conductivity in drinking- water
Card's contents:EURO REPORTS AND STUDIES 2 533,632 SODIUM Sodium, chlorides, and conductivity in drinking- water.Report on a WHO Working Group.The Hague 1—5 May 1978. Copenhagen 1979 Regional Office for Europe 8 s.nlb. 4, 63, il. EURO Reports and Studies 2