A dissertation on snow plowing and the value of timber along the highways, by George W. Koronski, superintendent and county engineer.
|Main Author:||Koronski, George W.|
Roads > Michigan > Gogebic County.
Legend on diagram: ... Average cost of snow plowing roads 1927-1939 inclusive.
1 p. L., 38 numb. L.
plates, fold. map, col. diagr.
|Original Classification Number:||TE 153 .K83|
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