Sociocultural theory and the genesis of second language development 2026-02-16T12:39:42+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Lantolf, James P; Thorne, S. L. (Oxford applied linguistics, 2009)