"Yoan Udagawa: A Pioneer Scientist of Early 19th Century Feudalistic Japan" (PDF). Japanese Studies in the History of Science (ingiliscə). 12. 1973: 99–120...

"Yoan Udagawa: A Pioneer Scientist of Early 19th Century Feudalistic Japan" (PDF). Japanese Studies in the History of Science (ingiliscə). 12. 1973: 99–120...

steamboat entering Hyōgo Port shortly after its opening to the West in the late 19th century. Airoplandan Kobenin şəkli Akashi-Kaikyo körpüsü Kobenin içərişəhəri...

NDU-"Qeyrət", 2021, № 2(111) Socio-economic situation in the city of nakhchivan at the beginning of the 19th century Naxçıvan şəhərində sənətkarlıq (XIX əsrin birinci...

"Yoan Udagawa: A Pioneer Scientist of Early 19th Century Feudalistic Japan" (PDF). Japanese Studies in the History of Science (ingiliscə). 12. 1973: 99–120...

1: The Frontiers // The American Century. Yale University Press. 1996. ISBN 978-0-300-05721-8. İstifadə tarixi: 26 mart 2013. "Work in the Late 19th Century"...

tarixi: 29 may 2018. Henry Hoyle Howorth. History of the Mongols from the 9th to the 19th Century: The So-called Tartars of Russia and Central Asia. Cosimo...

Scholarship From the End of the Sixth Century B.C. to the End of the Middle Ages, (Cambridge University Press, 2011), 113. Ann Christy, Christians in Al-Andalus:711–1000...

tarixində orijinalından arxivləşdirilib, İstifadə tarixi: 2008-09-06 "A 19th-Century Mathematician Finally Proves Himself". NPR.org (ingilis). 2022-10-24...

H. H. History of the Mongols section: "Berke khan" H. H. Howorth History of the Mongols from the 9th to the 19th Century: Part 2. The So-Called Tartars...