Професор, який працює за столом і череп людини на передньому плані, знання та концепція дослідження - Стокове фото та зображення

Professor working at desk and human skull in the foreground, knowledge and research concept

Academic professor sitting at office desk, he is studying a human skull and writing a report

Academic professor sitting at office desk, he is studying a human skull and writing a report

Academic professor sitting at office desk, he is studying a human skull and writing a report

Professor working in his office, he is writing and reading books, research and knowledge concept

Professor struggling with writer's block: he is sitting at desk and he is unable to have good ideas

Young sad woman with cancer sitting on the hospital bed, she is wearing a headscarf, illness and healthcare concept

Professional wildlife photographer exploring a forest, he is checking the camera settings

Young girls at home studying astronomy on a book and watching the stars using a telescope

Young woman sitting at desk and working from home, she is typing on her laptop

Confused woman staring at the computer screen, e-learning and education concept

Couple sitting on the couch and watching a drama movie on TV