Profesor de pelo gris mirando teléfono inteligente en la sala de conferencias - Foto e imagen de stock

Senior lecturer holding book and looking away

Grey hair professor sitting in empty lecture room and looking at laptop

Grey hair professor sitting on desk in empty lecture room and using laptop

Senior lecturer holding book and looking away

Smiling grey hair professor holding paper plane in lecture hall

Grey hair professor using laptop at table in lecture hall

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

Senior writer looking at photo in frame at his workplace

Senior spiritual mentor in white shirt and beaded bracelets using digital tablet

Senor healing guru with digital tablet showing selenite stone at digital camera

Handsome senior writer reading manuscript with magnifying glass

Senior writer reading manuscript with magnifying glass

Senior man in tweed suit writing letter in front of white brick wall

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

Senior healing coach with digital tablet near human chakras scheme and blurred digital camera