Grey hair professor talking by smartphone and looking at camera - Stock Photo & Image

Senior lecturer showing idea gesture

Senior lecturer holding book and showing one finger up

Senior lecturer writing something on blackboard and showing one finger up

Smiling grey hair professor holding paper plane in lecture hall

Grey hair professor talking by smartphone and looking away

Senior lecturer holding book and looking away

Thoughtful senior lecturer sitting at table with pencil and notebook

Senior lecturer holding book and looking away

Cheerful businessman in glasses voting near brick wall

Portrait of smiling grey hair man looking at camera at home

Adult son and senior father gesturing while playing chess at home

Pensive handsome grey hair man thinking and looking at chessboard at home

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

Excited senior man in bow tie and jacket holding smartphone isolated on grey

Serious senior man writing in notebook with pencil

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