Thomas A. Carlson (ed.), "Qazwīn" in last modified August 9, 2017, http://syriaca.org/place/2968 Qazwīn قزوين A city in northwestern Iran 36.266819 50.003811 Attestation of name قزوين in the Kitāb al-buldān of Aḥmad ibn Abī Yaʿqūb al-Yaʿqūbī. http://syriaca.org/place/2968 https://pleiades.stoa.org/places/884204 https://en.wikipedia.org/wiki/Qazvin https://dbpedia.org/resource/Qazvin https://pleiades.stoa.org/places/884204 Kitāb al-buldān Aḥmad ibn Abī Yaʿqūb al-Yaʿqūbī 269