23rd International Congress of Vexillology — Yokohama, Japan
Organized by 日本旗章学協会 / Nihon Kishōgaku Kyōkai / Japanese Vexillological Association
on 13–17 July 2009
The proceedings were published as Official Proceedings: The Twenty-Third International Congress of Vexillology (Tokyo: Japanese Vexillological Association, 2011), edited by Miru Takano and Zachary Harden.
Last Updated on June 12, 2021