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EIGHT-FIRM CONCENTRATION RATIO: The proportion of total output in an industry that's produced by the eight largest firms in the industry. This is one of two common concentration ratios. The other is the four-firm concentration ratio. The eight-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and how market control is held by the eight largest firms in the industry.

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INJECTIONS-LEAKAGES MODEL

A macroeconomic model that balances non-consumption expenditures on production (injections) and non-consumption uses of income (leakages) that is used to identify the equilibrium level of, and analyze disruptions to, aggregate production and income. The injections-leakages model is based on the principles of Keynesian economics and provides an alternative to the standard aggregate expenditures (Keynesian cross) analysis. The three injections included in the model are investment expenditures, government purchases, and exports. The three leakages included in the model are saving, taxes, and imports. Three variations are the two-sector injections-leakages model (or saving-investment model), three-sector injections-leakages model, and four-sector injections-leakages model.

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time wandering around the downtown area looking to buy either any book written by Isaac Asimov or a how-to book on building remote controlled airplanes. Be on the lookout for celebrities who speak directly to you through your television.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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