Vista ritagliata di donna che scrive metanfetamina su lavagna bianca - Foto e immagini stock

Cropped view of woman writing chemical formula on white board

Cropped view of woman writing methadone on white board

Cropped view of woman writing chemical formula on white board

Cropped view of woman writing amphetamine on white board

Cropped view of woman pointing with marker at white board

Pretty young college student writing on the chalkboard/blackboard during a math class

Cropped view of woman writing chemical formula on white board

Cropped view of woman pointing with marker at white board

Cropped view of woman pointing with marker at white board

Cropped view of woman writing ephedrine on white board

Cropped view of woman pointing with marker at white board

Cropped view of woman writing ecstasy (mdma) on white board

Top view of black chalk board with lettering ephedrine

Top view of "diabetes" lettering made of wooden cubes on blue background

Cropped view of woman in latex glove filling in allergy test form near test tubes with allergy test lettering isolated on yellow