Royalty-Free Science and Technology Photos, dominant color: brown
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4000x2667
Public Domain
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2393x1602
Public Domain
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3872x2592
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2000x1500
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3000x2400
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5472x3648
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5000x3750
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3640x2427
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4898x3265
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1280x936
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2698x4047
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2339x1782
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5184x3456
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3000x2250
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4096x4096
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1920x1200
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5426x3748
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5472x3648
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4601x3092
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4288x2848
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5184x3456
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2500x1749
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3840x2160
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4272x2403
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4752x3168
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1920x1200
Public Domain
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1920x1272
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4976x3223
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4898x3265
Public Domain
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2513x1669
Public Domain