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education school book stack of college high school or university college books with text learning gives knowledge wisdom online learning study, globe is courtesy of NASA, http://visibleearth .nasa.gov/

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Image ID: 77484655
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Small
500x334 6.9"x4.6" (72dpi) 217 KB
Med
1000x667 3.3"x2.2" (300dpi) 727 KB
Large
5616x3744 18.7"x12.5" (300dpi) 10.4 MB
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