Professori, mies, kemisti, biologi valkoisessa lääketieteellisessä kaapussa, silmälasien professori, mies, jolla on parta ja viikset, pitää luokkaa, oppitunti Tribunessa, opettajan pöytä, otti lasit pois, puhui, elehti, kääntyi takaisin, vihreä liitutaulu - Kuvapankin materiaali ja video

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, man is gesticulating, turning back, green blackboard on the wall is behind the

Professor, Chemist, Biologist, Teacher is Holding the Class,Having Speech, Slap His Palm on the Tribune, water tap, sink, professor in white medical robe, in glasses, daytime, green blackboard, indoor, light from the windows, door is behind the

Professor, Chemist, Biologist, Male, is is Walking by Dark Corridor to the Auditorium, Entered, Started to Hold the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical robe, gesticulating, professor with beard

Doctor reading file and using computer at reception desk

Professor, Chemist, Biologist, Male, Have Closed the Door, Opened the Door, Entered the Classroom, Closeup, Began the Lesson, teacher is Holding the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical

Doctor reading file and using computer at reception desk

Professor, Man, Chemist, Biologist in White Medical Robe, professor in glasses, man with beard and mustache, is Holding the Class, Lesson at the Tribune, Teacher's Desk, man is gesticulating, turning back, green blackboard on the wall is behind the

Professor, Chemist, Biologist, Teacher is Holding the Class,Having Speech, Slap His Palm on the Tribune, water tap, sink, professor in white medical robe, in glasses, daytime, green blackboard, indoor, light from the windows, door is behind the

Professor, Chemist, Biologist, Male, is is Walking by Dark Corridor to the Auditorium, Entered, Started to Hold the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical robe, gesticulating, professor with beard

Professor, Chemist, Biologist, Male, Have Closed the Door, Opened the Door, Entered the Classroom, Closeup, Began the Lesson, teacher is Holding the Class, Lesson in Auditorium in front of Students, professor in glasses, in white medical

Professor, Male, Chemist, Biologst is Holding Lecture, Class, Lesson, Teacher at the Tribune, is pulling up clothes under the medical robe, talking, gesticulating, walking by auditorium, professor in glasses, man with beard and mustache, Students in

People are Arranging Old Books on the Glass Shelves in Museum, brown pages, Old Historical book. Man in glasses, woman, Ancient machines, tools for printing. Nestor the Chronicler's book "The Tale of Bygone Years", Paterik Kievo-Pechersky, year of