Center-pivot Irrigation (thumbnail)
Description:
Center-pivot irrigation is an example of user innovation followed by development of a similar commercial product. Image is in the public domain. Source: Wikipedia.
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Center-pivot Irrigation (thumbnail)
Alt text:
Photograph of irrigation machines being used on a field of cotton.
Caption:
Center-pivot irrigation is an example of user innovation followed by development of a similar commercial product. (Image is in the public domain. Source: Wikipedia.)
Credit:
This image is in the public domain. Source: Wikipedia.
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Spring
2012
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