KS M ISO 5935-2010 Crude sodium borates for industrial use-Determination of total and alkali-soluble silica contents-Molybdosilicate spectrometric method
2010KS M ISO 5935:2010 Crude sodium borates for industrial use-Determination of total and alkali-soluble silica contents-Molybdosilicate spectrometric method
2006KS M ISO 5935:2006 Crude sodium borates for industrial use-Determination of total and alkali-soluble silica contents-Molybdosilicate spectrometric method