Royalty-Free College of natural resources Photos, orientation: horizontal, minimum size: 5k
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person holding droplets of water -
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photo of man standing on green steel pipe -
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person holding match stick -
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green leaf vine plant -
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white windmill in green grass field -
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white building filled with solar panels surrounded by trees -
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person lighted candle using match stick -
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spinning windmill under white sky at daytime