references


 * References**
 * Online Writing Lab
 * [|Word Central]
 * [|Encyclopedia.com]
 * [|Dictionary.com]
 * [|VisuWords - graphical dictionary]
 * U.S. Fact Finder
 * [|CIA World Factbook]
 * [|World Atlas]
 * [|Great Lessons Sites]
 * [|Inventor's Toolbox]
 * [|Visual Dictionary]