Arabic phonetics; Ibn Sinas Risalah on the points of articulation of the speech-sounds. 2026-02-15T19:53:06+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Avicenna, 980-1037 (Arthur Jeffery memorial monographs,, 1963)