interaction
- This page was last modified 11:31, 4 April 2007 by Wikipedia user Yao Ziyuan. Based on work by Wikipedia user(s) Kingbotk.
- 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