Economics broadens out in a hundred directions. Whole libraries have been written on specialized fields alone, such as money and banking, foreign trade and foreign exchange, taxation and public finance, government control, capitalism and socialism, wages and labor relations, interest and capital, agricultural economics, rent, prices, profits, markets, competition and monopoly, value and utility, statistics, business cycles, wealth and poverty, social insurance, housing, public utilities, mathematical economics, studies of special industries and of economic history. But no one will ever
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