Copyright and Fairuse
作者：C Pricer
1. Copyright Term and the Public Domain in the United States - http://www.copyright.cornell.edu/resources/publicdomain.cfm
2. Copyright Law and Television - http://www.museum.tv/archives/etv/C/htmlC/copyrightlaw/copyrightlaw.htm
3. U.S. Copyright Office - Copyright Registration of Music - http://www.copyright.gov/fls/fl105.html
4. http://www.copyright.gov/fls/fl109.html
