Thomas A. Carlson (ed.), "al-Nahrawān" in last modified August 9, 2017, http://syriaca.org/place/2959
   
      
         
            
               al-Nahrawān
               النهروان
               A river in eastern Iraq
               
               
                  33.5 44.5
               
               
                  Attestation of name النهروان in the 
                        Kitāb al-aʿlāq al-nafīsa of Aḥmad ibn ʿUmar Ibn Rustah.
                  
               
          
               http://syriaca.org/place/2959
               https://pleiades.stoa.org/places/895436
               https://en.wikipedia.org/wiki/Nahrawan_Canal
               https://dbpedia.org/resource/Nahrawan_Canal
               
                  https://pleiades.stoa.org/places/895436
                  
               
               
                  Kitāb al-aʿlāq al-nafīsa
                  Aḥmad ibn ʿUmar Ibn Rustah
                  
                  90