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    • Nebraska Tractor Test Laboratory, Records

    • Farm tractors--Testing; Tractors--Testing; Allis-Chalmers tractors; Allis-Chalmers Manufacturing Company; Crawler tractors
    • "Test no. 397. Max. drawbar pull test. 37,556 lbs pull was obtained. The Allis-Chalmers HD-19 crawler is on the test track towing the Adams test car. The latter is towed separately from the 4 "load tractors" because of the lesser strength of its...

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