English proficiency in the Saudi Air Academy : Validating a new test battery 2026-02-15T13:26:22+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Al-Ghamdi, Gharmallah A. J (University of Edinburgh, 1986)