From Wikipedia, the free encyclopedia
Content is available under CC BY-SA 3.0 unless otherwise noted. Images, videos and audio are available under their respective licenses. Wikipedia®is a registered trademark of the Wikimedia Foundation, Inc. Wiki (Study in China) is an independent company and has no affiliation with Wikimedia Foundation.
This article uses material from the Wikipedia article 1931, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply. (view authors).