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| Al Kharj in 1972USGS (Riyadh, Landsat 1 MSS, 24
September 1972)
Source U.S. Geological Survey
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| Al Kharj in 1972USGS (Riyadh, Landsat 1 MSS, 24
September 1972)
Source U.S. Geological Survey
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| Al Kharj in 1990
The red circles are fields with center-pivot irrigation
systems, drawing water from Saudi Arabia's aquifers. This irrigation
development resulted from the investment of part of Saudi Arabia's oil
revenues in an effort to modernize agriculture.
Source U.S. Geological Survey USGS (Riyadh, Landsat 4 TM, 31 August 1990) |
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