Thomas A. Carlson (eds.), "Okeanos Potamus" in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/2930
   
      
         
            
               Okeanos Potamus
               بحر أوقيانوس
               Oceanus
               The ocean thought to
                  surround the dry land of Afro-Eurasia.
               
                  Attestation of name بحر أوقيانوس
                     in the Kitāb al-aʿlāq al-nafīsa of
                        Aḥmad ibn ʿUmar Ibn Rustah.
                  
               
               
               https://bqgazetteer.bethmardutho.org/place/2930
               http://syriaca.org/place/2930
               https://en.wikipedia.org/wiki/World_Ocean
               https://dbpedia.org/resource/World_Ocean
               
                  Kitāb al-aʿlāq al-nafīsa
                  Aḥmad ibn ʿUmar Ibn Rustah
                  
                  83