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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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SHORT-RUN AGGREGATE SUPPLY AND MARKET SUPPLY

The short-run aggregate supply curve, or SRAS curve, has similarities to, but differences from, the standard market supply curve. Both are positively sloped. Both relate price and quantity. However, the market supply curve is positively sloped due to the law of diminishing marginal returns and the short-run aggregate supply curve is positively-sloped due to inflexible prices, the pool of natural unemployment, and imbalances in real resource prices.

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APLS

BLACK DISMALAPOD
[What's This?]

Today, you are likely to spend a great deal of time driving to a factory outlet hoping to buy either a battery-powered, rechargeable vacuum cleaner or a remote controlled World War I bi-plane. Be on the lookout for mail order catalogs with hidden messages.
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Woodrow Wilson's portrait adorned the $100,000 bill that was removed from circulation in 1929. Woodrow Wilson was removed from circulation in 1924.
"Nobody can be successful unless he loves his work. "

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International Trade Commission
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