Senior schläft mit Buch auf Sofa - Stockfoto & -bild

Grey hair professor sitting on table in lecture room and holding book

Teacher going to continue embracing new roles and responsibilities. Senior man teacher at chalkboard. Back to school. Teacher old school generation. Black and white. Experienced lecturer. Mature man

University courses. stem in classroom. senior man teacher use tool at blackboard. bearded tutor in glasses. back to school. protractor ruler. learn geometry easily. Black and white. become good at

Smiling grey hair professor sitting on table in lecture room

Grey hair professor sitting on table in lecture room and holding book

Learn geometry easily. become good at math. stem in classroom. senior man teacher use tool at blackboard. bearded tutor in glasses. back to school. protractor ruler. physics and mathematics. Black and

Portrait of mature psychologist in glasses looking at camera, holding pictures with ink stain, Rorschach Inkblot sitting on the couch. Mental health and counseling concept. Selective focus on face

Selective focus of bearded retired man holding hat while standing in classroom

Selective focus of retired man holding hat while standing near board with letters

Bearded retired man in glasses looking at camera

PRIPYAT, UKRAINE - AUGUST 15, 2019: pensive senior man standing near building with energetic lettering in chernobyl

Mature man sitting in armchair and drinking whiskey isolated on grey

Cropped view of middle aged man in glasses standing with closed eyes isolated on grey

Relaxed senior man in headphones sitting with hands behind head on sofa and listening music with smartphone

Selective focus of trendy mature man sitting in armchair with crossed legs and holding glass of whiskey isolated on grey