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Science teacher writting at blackboard. Education and physics.

Businessman in office

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

Waist-up view of man with facial hair wearing open collar shirt, jacket, eyeglasses, and standing in hallway smiling at camera. Property release attached.

Portrait of mid aged professor standing in front of blackboard. Male teacher wearing blazer and bow tie. Hand on chin.

Teacher, Professor, Senior Adult, University,Library,Book,Senior,Men,60-69 Years,Photography

Portrait of smiling mature businessman sitting in office.

Warm toned vertical portrait of male college professor looking at camera in classroom hall and holding book

A business man from arabian decent, smiling and bearded. Photo taken indoors in Brussels.

Close-up studio portrait of a 50 year old white bearded man with glasses in a plaid jacket against a white background

Elderly man with a confident walk, dressed in a blue shirt and light pants, strolls in a well-lit hallway

front view portrait of a caucasian old man with white and wavy hair in a gray background studio

Senior teacher standing holding a book in front of a bookcase

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

Bald professor of modern university sitting by desk against blackboard while keeping hands by chin and looking at you in large classroom

Autistic man with school supplies headed to a special education class

Portrait of smiling man

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

Portrait Of Teacher By Blackboard In Classroom

Portrait of a Librarian Man researching an old newspaper with facial protective mask

elderly man with a serious expression sits at a table in a busy, well-lit room, hands clasped. He reflects on future issues like climate change, job losses due to automation, and power concentration

Close-up of a happy senior businessman

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

Autistic male standing on school grounds with school supplies .

Young Business Man And Happiness

Happy man at the library

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

University professor with stick, cross processed

Senior man with a calm demeanor walks confidently through a modern corridor, wearing a light blue shirt and khaki trousers

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

Free Images: "bestof:SiriciusGiessen.jpg en Portrait of w de Michael Siricius Professor as professor in Giessen University Archives http //digibib ub uni-giessen de/cgi-bin/populo/..."

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