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$An old professor teaches mathematics front of the blackboard$

On the university campus, a male professor is giving an angry lecture.

A portrait of university professor standing in the campus library, smiling and looking at the camera with copy-space.

Teacher, Professor, Senior Adult, University,Library,Book,Senior,Men,60-69 Years,40-49 Years,50-59 Years,Photography

Waist-up view of early 50s woman standing in front of class and smiling at camera, students at desks in background. Property release attached.

$People and education. Teacher writing on math equation on blackboard during lesson.$

A distinguished senior man, characterized by his glasses and beard, stands amidst the bookshelves of the library, embodying the pursuit of knowledge and the love of literature.

Teacher using laptop to do an online / video class

Mature journalist writing down notes, preparing article for scientific magazine

A group of business people are using mobile devices in a meeting room.

Serious professor at the library

portrait of young man in working office

Senior teacher standing holding a book in front of a bookcase

Portrait of a charming elderly male small business owner standing in his bookstore.

Teacher, Professor, Senior Adult, University,Library,Book,Senior,Men,60-69 Years,40-49 Years,50-59 Years,Photography

A university professor is in the university library working on his research and using his mobile phone.

Handshake Deal of Business People in an Office

Inspired mature writer sitting in a library, completing last chapter of his new book

Portrait of kind elderly man. Happy Caucasian man in eyeglasses with gray hair standing on bookshelves background looking at camera with joy. Education for mature people concept

A middle-aged men works in a school library. Professor prepares classes at the department.

Portrait of male teacher at a university sitting in a comfortable leather chair at the department.

Science teacher writting at blackboard. Education and physics.

Legal books, serious portrait and lawyer research law firm, office management or justice learning study. Financial advisor, knowledge focus and Mexico government man, consultant or attorney education

Teacher, Professor, Senior Adult, University,Library,Book,Senior,Men,60-69 Years,40-49 Years,50-59 Years,Photography

Portrait of mid adult man at library

A senior Caucasian therapist is standing in his office with a green mental health awareness ribbon attached to his jacket and with copy-space.

Teacher in High School

Man using computer. close up

Senior teacher standing holding a book in front of a bookcase

Smiling librarian man with arms crossed in library

Free Images: "bestof:Deputado Professor Lemos (PT) Foto: Pedro de Oliveira/Alep"

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