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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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INCOME CHANGE, UTILITY ANALYSIS

A disruption of consumer equilibrium identified with utility analysis caused by changes in the buyers' income, which results in a change in the quantities of the goods consumed. The change in buyers' income alters the income constraint and forces a reevaluation of the rule of consumer equilibrium.

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APLS

BROWN PRAGMATOX
[What's This?]

Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club hoping to buy either a coffee cup commemorating last Friday (you know why) or a wall poster commemorating the first day of spring. Be on the lookout for high interest rates.
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This isn't me! What am I?

The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"The man who does not read good books has no advantage over the man who cannot read them. "

-- Mark Twain

ACRS
Accelerated Cost Recovery System
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