263 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "263" in English language version.

Last modified: 14:50:48, 11 October 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

11books.google.com

3^rd place

3^rd place

books.google.com (Global: 3^rd place; English: 3^rd place)

Needham, Joseph; Wang, Ling (1995) [1959]. Science and Civilisation in China: Volume 3, Mathematics and the Sciences of the Heavens and the Earth. Cambridge, England: Cambridge University Press. p. 30. ISBN 978-0-521-05801-8.