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Filter: FORMAT_NUMBER_ORG of CF 162
| Date: | 1958 |
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| Description: | Aerial view of contour strip farming with the Obert Olstad farm in foreground. The Carl Backum farm is in the background. |
| Date: | |
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| Description: | View of a crew surveying land, digging a ditch, and laying drain tile. |
| Date: | 1936 |
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| Description: | A level pasture terrace showing water in the channel. These terraces, largely experimental, are built on the level, drainage being provided for by means of... |
| Date: | 1956 |
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| Description: | Aerial view of contour farming. Farms and patches of woods are spread out in the landscape. |
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