scientist protective suit mask and gloves holds his hand flask with blue liquid takes water from the river for

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A scientist in a protective suit, mask and gloves, holds in his hand a flask with a blue liquid and takes water from the river for Royalty Free Stock Photo
A scientist in a protective suit and blue gloves, conducts research on the ground, holds a glass flask in his hand and takes a Royalty Free Stock Photo
   
   
   
   
   
A scientist in a protective suit, mask and gloves, holds in his hand a flask with a blue liquid and takes water from the river for
   
   
   
   
   
   
   
A scientist in a protective suit, mask and gloves, holds in his hand a flask with a blue liquid and takes water from the river for testing, close-up, there is a place for inscription

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