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Norm
DIN ISO 29991
Issue date: 2022 03
Language-learning services - Requirements (ISO 29991:2020)
Valid
Publisher:
Deutsches Institut für Normung
Format:
Digital | 20 Pages
Language:
German
| English
DIN ISO 29991
2016 07
Language learning services outside formal education - Requirements (ISO 29991:2014)
Norm