Chalkboard with chemistry formulas and science equipment flat cartoon style, vector illustration on green background. Blackboard with inscriptions and chemical glassware standing on desk:: tasmeemME.com
Chemical Formula and nomenclature of L-DOPA handwritten with chalk on a blackboard, conceptual image, Stock Photo, Picture And Rights Managed Image. Pic. ZK8-3191567 | agefotostock
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Handwritten chalk chemical formula of Caffeine on school blackboard. Stock Photo | Adobe Stock