Thomas A. Carlson (ed.), "Leiden" in last modified August 9, 2017, http://syriaca.org/place/3028 Leiden ليدن A city in the Netherlands 52.150265 4.518428 http://syriaca.org/place/3028 https://pleiades.stoa.org/places/99008 https://en.wikipedia.org/wiki/Leiden https://dbpedia.org/resource/Leiden https://pleiades.stoa.org/places/99008