Wisconsin Highway Commission collects data on 7,500 miles of road. (1500 w.) (82426)
Speedy road condition survey by auto cost only $1.20 per mile
Eng News-Rec
1917
Article (Journal)
English
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Effect of road-unit size on cost per mile of road
Engineering Index Backfile | 1956
Floodlighting quarter-mile auto race track
Engineering Index Backfile | 1951
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