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