2024-04-102024-04-102021https://otos.stat.fi/handle/123456789/28334enCC BY 4.0adult educationeducationeducational institutionsstudentsAdult education of educational institutions 2020Oppilaitosten aikuiskoulutus 2020Vuxenutbildning vid läroanstalter 2020URN:NBN:fi-fe20230917129230fulltext