Siwe włosy profesor przytrzymanie papierowy samolot w sali wykładowej - Zdjęcie stockowe & obraz

Grey hair professor standing near stack of books

Grey hair professor talking by smartphone and looking away

Senior lecturer holding book and looking away

Smiling senior lecturer standing in classroom and looking at camera

Smiling grey hair professor holding paper plane in lecture hall

Senior lecturer holding book and showing one finger up

Smiling grey hair professor sitting on table with laptop

Senior lecturer holding book and looking away

Smiling grey hair professor holding wooden pointer

Focused senior writer reading manuscript with magnifying glass

Happy bearded speaker in glasses talking near microphones and brick wall

Smiling handsome grey hair man sitting on sofa at home

Cheerful businessman in glasses voting near brick wall

Senior man in stylish tweed suit looking away in front of white brick wall

Pensive handsome grey hair man holding book and looking at camera

High angle view of bearded mature businessman in eyeglasses looking at camera in office

Portrait of smiling grey hair man looking at camera at home

High angle view of handsome grey hair man reading business newspaper on sofa at home

Smiling senior writer leaning back on workplace

Senior man in tweed suit reading notes in notebook with magnifying glass