Scientifique barbu sérieux dans des lunettes de protection et des gants tenant des éprouvettes avec des réactifs et faisant des expériences

Scientifique faisant des expériences - Photo, image

Scientifique barbu sérieux dans des lunettes de protection et des gants tenant des éprouvettes avec des réactifs et faisant des expériences - Photo & image de stock

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Scientifique barbu sérieux dans des lunettes de protection et des gants tenant des éprouvettes avec des réactifs et faisant des expériences - Photo & image de stock

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