Contour plowing and terracing with tractor
MLA
Not Available. "Contour plowing and terracing with tractor." Hargrett Library. 1939-04, https://dlg.usg.edu/record/guan_caes_0004-001-010-103-001#item.
APA
Not Available (1939-04). Contour plowing and terracing with tractor. Retrieved from https://dlg.usg.edu/record/guan_caes_0004-001-010-103-001#item
Chicago
Not Available. "Contour plowing and terracing with tractor." 1939-04. May 27, 2026. https://dlg.usg.edu/record/guan_caes_0004-001-010-103-001#item.
