Palestrante sênior pensativo sentado à mesa com lápis e caderno - Banco de fotos e imagens

Senior lecturer holding book and pointing on something

Smiling grey hair professor holding paper plane in lecture hall

Senior lecturer showing idea gesture

Smiling grey hair professor holding wooden pointer

Grey hair professor using laptop at table in lecture hall

Senior lecturer holding book and looking away

Grey hair professor showing fist to students

Grey hair professor talking by smartphone and looking at camera

Handsome grey hair man reading book at home

Serious senior man writing in notebook with pencil

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

Portrait of smiling grey hair man looking at camera at home

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

Pensive handsome grey hair man holding book and looking at camera

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