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HARD CURRENCY: Historically money that is in the form of precious metals, especially gold. In modern times, any national currency that is expected to retain its value (and even appreciate in value), and is readily acceptable for most international transactions. The U.S. dollar, German marc, and Swiss franc tend to be near the top of the list of hard currencies (also termed hard money).

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FOUR-FIRM CONCENTRATION RATIO

The proportion of total output in an industry produced by the four largest firms in an industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. Another related measure is the Herfindahl index. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control held by the four largest firms in the industry.

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Today, you are likely to spend a great deal of time at a crowded estate auction looking to buy either a box of multi-colored, plastic paper clips or several orange mixing bowls. Be on the lookout for door-to-door salesmen.
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The portion of aggregate output U.S. citizens pay in taxes (30%) is less than the other six leading industrialized nations -- Britain, Canada, France, Germany, Italy, or Japan.
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