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Scientific American, Vol. 39, No. 11 (1878) (1878)
leaf 5
e, and the | I do not delay this letter to give cither the dynamometrical The other one is adapted for cutting drains in natural | field of 300 acres of bects on the farm at Pet it-Bourg, where indications of the draught of the plows, or the decisions on prairies. The sloping cutter and the curved… … Fig. 21.BUTTOIR, OR RIDGING PLOW. © 1878 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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