Progress of Road Building in the Middle West
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https://ageconsearch.umn.edu/record/342229
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Contents: Introduction --- Forces at Work for Highway Improvement --- The Rural Population and the Roads --- Reasons for Lack of Progress in Road Building --- State and National Aid --- Antiquated Methods --- Road Laws and Conditions in Several States --- Road Material --- Road Construction --- A Few Suggestions --- Educational Work
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创建时间：
2024-05-01
