Profesor senior sosteniendo libro y mirando hacia otro lado - Foto e imágenes de stock

Senior lecturer leaning on table and looking away

Grey hair professor pointing on something at lecture hall

Senior lecturer holding piece of chalk and looking away

Smiling grey hair professor holding stack of books with apple on top

Smiling grey hair professor holding paper plane in lecture hall

Smiling grey hair professor holding wooden pointer

Cropped image of senior lecturer holding book and showing one finger up

Senior lecturer pointing on something in lecture room

Pensive handsome grey hair man holding book and looking at camera

Portrait of smiling grey hair man looking at camera at home

Positive senior man talking on smartphone and pointing with finger isolated on grey

Elderly man in bow tie and blue jacket using smartphone isolated on grey

Cheerful businessman in glasses voting near brick wall

Smiling elderly man in eyeglasses and bow tie looking at camera isolated on grey

Thoughtful senior man with pencil and sheet of paper in front of white brick wall

Smiling senior man looking at camera while touching jacket isolated on grey

Handsome grey hair man sitting at table with chessboard and looking at camera