Stock Photo - board black blackboard difficult formula math
board black blackboard difficult mathematical integral formula math
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Small JPEG
11.1" x 8.6" @ 72 dpi28.2 x 21.9 cm @ 72 dpi800x622 px - 72 dpi
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Medium JPEG
5.3" x 4.1" @ 300 dpi13.5 x 10.5 cm @ 300 dpi1600x1243 px - 300 dpi
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10.0" x 7.8" @ 300 dpi25.4 x 19.7 cm @ 300 dpi3000x2331 px - 300 dpi
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22.8" x 17.7" @ 300 dpi57.8 x 44.9 cm @ 300 dpi6830x5308 px - 300 dpi
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34.2" x 26.5" @ 300 dpi86.7 x 67.4 cm @ 300 dpi10245x7962 px - 300 dpi
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Stock Photo Information
Photo ID:
csp6516964
Uploaded by:
lunamarina
Date Added:
2011-06-07
Popularity:
1 Downloads, 428 Views
Title:
board black blackboard difficult formula math
Keywords:
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