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  • All fields: untilled
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    • Pulverator and drill, 1925

    • Farm Equipment; Agriculture; Iowa State University;
    • The operation of a pulverator and drill in an untilled field. The tractor pulling the machinery has unusually light and narrow steel wheels. The photograph is from the rear. A roadway fence line at the edge of the field is in the middle distance.
    • Tractor with attached field cultivator, 1955

    • Farm Equipment; Agriculture; Iowa State University;
    • A rubber tired tractor with an attached field cultivator preparing a seedbed for corn. The tractor is stationary without a driver. It is viewed at middle distance from the rear, in the middle of a large field, untilled except for where this...

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