Vue latérale de professeur de cheveux gris dessin avec morceau de craie au tableau noir - Photo & image de stock

Grey hair professor holding piece of chalk and looking at blackboard

Side view of grey hair professor correcting something at blackboard

Happy senior lecturer holding paper plane in hand

Senior lecturer writing something on blackboard and showing one finger up

Smiling grey hair professor sitting on table with laptop

Pensive grey hair professor standing at blackboard with piece of chalk

Grey hair professor correcting something at blackboard

Senior lecturer holding book and looking away

Close-up shot of senior writer at workplace taking book from stack

Cropped view of senior man standing and reading book at home

Bearded senior writer reading manuscript with magnifying glass

Cheerful businessman in glasses voting near brick wall

Focused senior writer reading manuscript with magnifying glass

Smiling elderly man looking at camera while holding laptop isolated on grey

Handsome senior writer in tweed suit working with typewriter

Serious senior man writing in notebook with pencil