Vista trasera de fórmulas de dibujo de mujer en pizarra con tiza. En la conferencia universitaria - Foto e imágenes de stock

Rear view of student drawing formulas on blackboard with chalk

Rear view of woman drawing formulas on blackboard with chalk

Young businesswoman standing on ladder and drawing on wall. Mixed media

Rear view of woman drawing formulas on blackboard with chalk

Bottom view of businesswoman or teacher and sketches at blackboard

Bottom view of businesswoman or teacher and sketches at blackboard

Rear view of man drawing formulas on blackboard with chalk

Rear view of businesswoman drawing infographs on concrete wall

Businessman or teacher drawing science sketches at blackboard

Cute Girl of school age using megaphone in empty concrete room

Rear view of man drawing formulas on blackboard with chalk

Rear view of businesswoman drawing infographs on concrete wall

Rear view of teacher drawing science formulas on concrete wall