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Blue samples of precious metals. Particles of minerals lying on table of laboratory. Research center. Chemistry. Nature. Indoors.
Nice samples of white precious metals in research laboratory of high school. Paricles of minerals. Chemistry. Indoors. Close-up.
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Chemical reaction in flask at chemistry lab. Scientist conducting chemical experiment in chemistry laboratory. Chemist working with chemical liquid in research lab. Closeup of chemical experiment
Young student conducting chemistry experiment in school. Close-up.
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Laboratory microscope science research inspecting chemical drop on sample slide
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