- did you know?
- Back in the 1880s, agricultural researchers at land-grant colleges complained about the great numbers of individual letters they were answering about their research. Then, in 1914 Congress addressed the need to distribute research results with the passage of the Smith-Lever Act creating the Cooperative Extension Service and its system of informal education. Read more...
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31.
What is the difference between a recreational grade GPS, a mapping grade GPS, and a survey grade GPS?
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Published: January 25, 2008
32.
What is the difference between multispectral and hyperspectral imagery?
Published: January 25, 2008
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I received a GPS as a gift. Can I use it to map my property?
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Published: January 25, 2008
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What is the difference between leaf-on and leaf-off imagery?
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Published: January 25, 2008
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