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World Survey of Current Research and Development (1977) on Roads and Road Transport. A Report Covering an Inventory of 51Countries,

机译:关于道路和公路运输的当前研究和发展世界调查(1977年)。一份涵盖51个国家的清单的报告,

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The report contains comprehensive literature surveys in 27countries and updatings in 24countries previously surveyed. Material from 16other countries was requested,but was not obtained by date of publication. The report also includes an in-depth study on Diversion and Corridor Control Systems in Western Europe.

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