Provisions of law enacted in 1919 to encourage manufacture and sale of improved tractors and to contribute to more successful use of tractor for farming; tests reported for each year from 1920 through 1955; procedure and rules in testing tractors; belt tests; drawbar tests; final inspection; major changes in tractor testing.
Nebraska tractor test changes
Soc Automotive Engrs -- Paper
Society of Automotive Engineers -- Meeting ; 1956 Agricultural
1956
9 pages
Conference paper
English
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