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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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LAGGING ECONOMIC INDICATORS

Seven economic statistics that tend to move up or down a few months AFTER business-cycle expansions and contractions. Most importantly, these measures indicate peak and trough turning points about three to twelve months after they occur. Lagging economic indicators are one of three groups of economic measures used to track business-cycle activity. The other two are coincident economic indicators and leading economic indicators.

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APLS

GREEN LOGIGUIN
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Today, you are likely to spend a great deal of time looking for a downtown retail store seeking to buy either a how-to book on wine tasting or a bookshelf that will fit in your closet. Be on the lookout for broken fingernail clippers.
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Lombard Street is London's equivalent of New York's Wall Street.
"Do you want to be safe and good, or do you want to take a chance and be great?"

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CPSC
Consumer Product Safety Commission
A PEDestrian's Guide
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