| Titre |
Public road mileage and revenues in the United States, 1914 : a summary showing for each state total and surfaced mileage of public roads at the close of 1914, revenues for roads and bridges in 1914, state and local road and bridge bonds outstanding on January 1, 1915, and other related data / prepared jointly by the Division of Road Economics of the Office of Public Roads and Rural Engineering and state collaborators. |
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