Seeding attachment for disk tillers
作者： Starr John H
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lens.org 参考文章(6)
Robert W Kohler, Planter and disker ,(1927)
John P Seaholm, Disk cultivator or plow ,(1929)
Merritt S. Draper, Extension attachment for two row corn planters ,(1931)
David M Fry, Three-wheeled riding-lister. ,(1902)
Palmer Alden Caleb, COMBINED HARROW AND SEED-PLANTER. ,(1902)
Steinmann Edward, Schielke Herman, INDICATOR FOR CHECK-ROWERS. ,(1906)