Texas Education Agency
Texas Gateway: Chapter 9: Trade Balances and Flows of Financial Capital
By the end of this section, you will be able to do the following: Explain the connection between trade balances and flows of financial capital, Calculate comparative advantage, and Explain balanced trade in terms of investment and...
Wikimedia
Wikipedia: Capital (Economics)
This site from Wikipedia gives a comprehensive overview of capital. Includes many economic terms with links for further clarification. A good analysis of multiple aspects of capital.