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DIN EN ISO 15257
Cathodic protection - Competence levels of cathodic protection persons - Basis for a certification scheme (ISO 15257:2017); German version EN ISO 15257:2017
Edition
2017-09
DIN CEN/TS 17500
Quality of care and support for older persons; English version CEN/TS 17500:2021
Edition
2022-02