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54407 1024x600 communication, blue background, scheme
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12630 1024x600 polar bears, communication, animals
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104492 1024x600 galaxy cluster, gravity, communication
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31118 1024x600 computer code, screen, communication
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11372 1024x600 penguins, three, communication
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6250 1024x600 earth, planet, communication
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17820 1024x600 person, schemes, plexus