DIN EN ISO 9202 E:2018 Draft Document - Jewellery and precious metals - Fineness of precious metal alloys (ISO/DIS 9202:2018); German and English version prEN ISO 9202:2018
2018DIN EN ISO 9202 E:2018 Draft Document - Jewellery and precious metals - Fineness of precious metal alloys (ISO/DIS 9202:2018); German and English version prEN ISO 9202:2018