secchi disk with rope white table
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
secchi disk with rope white table |
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| Secchi disk with rope on a white table, prepared for water transparency measurement. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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