Graue Haare Professor Blick auf Buch - Stockfoto & -bild

Thoughtful senior lecturer sitting at table with pencil and notebook

Grey hair professor using laptop at table in lecture hall

Senior lecturer holding book and pointing on something

Grey hair professor showing fist to students

Smiling grey hair professor holding paper plane in lecture hall

Senior teacher make notes. teacher of geography. classroom with map and blackboard. back to school. education in retro school. bearded man give marks in diary. write notes in book.

Grey hair professor holding stack of books with apple on top

Close-up shot of senior writer at workplace taking book from stack

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

Serious senior man writing in notebook with pencil

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

Focused senior writer reading manuscript with magnifying glass

Cheerful businessman in glasses voting near brick wall

Handsome grey hair man sitting on sofa and holding book

Thoughtful senior man in sweater writing letter

Handsome grey hair man reading book at home

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