alcohol
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alcohol |
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| navigate by keyword : alcohol alcoholism biochemistry black blackboard blank board chalk chalkboard chemical chemistry class concept conceptual drawing education energy formula fuel handwriting high illustration learning message methanol model molecular molecule natural organic school science scientific scientist sign structural structure symbol teacher teaching text write |
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| Alcohol methanol on blackboard in chemistry class. |
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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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