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The Role of Telecommunications in Economic
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agricultural analysis average benefits cable call charges callers capital CCITT centers centimos chapter coefficients communications competition consumer surplus Costa Rica developing countries economies of scale efficient electronic energy equipment estimated example exchange expanded facilities factor improved income increased industrial countries input-output inputs Kenya kilometers located long-distance marginal cost ment munications operating entity optical fiber output Papua New Guinea PCO telephone percent price elasticity production Puerto Cortes radio reduce regions relatively residential telephone result revenues rural areas rural PCO satellite savings shadow price survey switching Table tariffs tele telecom telecommunica telecommunications investment telecommunications sector telecommunications services telecommunications tariffs telephone calls telephone density telephone lines telephone service telephone subscribers telex tion towns transport United urban variables villages Wellenius World Bank X-efficiency