2024-04-102024-04-102009https://otos.stat.fi/handle/123456789/20327enCC BY 4.0adult educationvocational adult educationvocational educationpersonnel trainingself-directed studieslanguage skillseducationother education than that leading to a qualificationinformation technologyeducation leading to a qualificationURN:NBN:fi-fe20230914126436fulltext