Researcher working on roof of high building, conducting laboratory test using blue reagent in glass flask, tweezers and stone, close-up snapshot. Concept of environmental problem
Researcher working on roof of high building, conducting laboratory test using blue reagent in glass flask, tweezers and stone, close-up snapshot. Concept of environmental problem
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Photo credit: © Anatoliy Gleb / Alamy / Afripics
License: Royalty Free
Model Released: Yes
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