(eds.), "Abyan - أبين " in The Beth Qaṭraye Gazetteer last modified January 10, 2020, https://bqgazetteer.bethmardutho.org/place/5573
  
    
      
        
          Abyan
          أبين
          
          [The ʿAdan Abyan] district ( mik̲h̲lāf ) in Yaman in the Wādī Banā, comprising several castles and the seaport of ʿAdan . There is a settlement of the same name 
            Abyan contained in the district.
          
            وأبين هى اقدم من عدن واليها تنسب عدن لان برهم وفواكههم وخضرهم منها لكثرة القرى والمزارع بها وكذلك لهج
          
                    
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          https://bqgazetteer.bethmardutho.org/place/5573
          http://syriaca.org/place/5573
          http://sws.geonames.org/80425
          
            Aḥsan al-taqāsīm fī maʿrifat al-aqālīm
                        Muḥammad ibn Aḥmad Maqdisī
                        
            85
          
                    
                        Encyclopaedia of Islam, Second Edition
                        P. Bearman
                        
                    
                    
                        http://sws.geonames.org/80425GeoNames Marc Wick