Lecture with formulas on the blackboard in front of studentsLecture with formulas on the blackboard in front of students
A lot of white men are sitting at a desk in front of the blackboardA lot of white men are sitting at a desk in front of the blackboard
Professor severus snape from harry potter on a broomProfessor Severus Snape from Harry Potter on a broom
Background in the form of a cover of a swedish band's music albumBackground in the form of a cover of a Swedish band's music album
Vladimir etush is an actor and professor in the image from the film caucasian captiveVladimir Etush is an actor and professor in the image from the film Caucasian Captive