interaction
In other languages
- This page was last modified 08:52, 27 November 2006 by Wikipedia user Yao Ziyuan.
- All text is available under the terms of the GNU Free Documentation License. (See Copyrights for details.)
Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a US-registered 501(c)(3) tax-deductible nonprofit charity. - About Wikipedia
- Disclaimers