Between the 1960s and the 1980s, developing countries have lost precious infrastructure worth billions of dollars through the deterioration of their roads. Large road networks, built at great expense, have been undermaintained and more heavily used and abused than expected. The cost of restoring these deteriorated roads is three to five times greater than the bill would have been for timely and effective maintenance, and restoration is only part of...
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详细
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1988/10/01
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出版
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13370
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1
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1
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2010/05/28
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Disclosed
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El deterioro de los caminos en los paises en desarrollo : causas y soluciones
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Roads & highways