Research methods in education 2026-02-15T23:55:16+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Cohen, Louis, 1928-; Manion, Lawrence; Morrison, Keith (Keith R. B. (RoutledgeFalmer, 2000)