教授、化学者、生物学者、教師の顔のクローズアップ、メガネを着用し、白い医療ローブで離れて行く、クラスでクローズアップ、講堂、木製の机、座席、行、円形劇場ホールとして講堂、昼間、屋内 - ストックフッテージ＆ビデオ

Professor, Chemist, Biologist, Teacher Closeup, Man in White Medical Robe and Glasses, took off the glasses, looking to the left, Walking Down by stairs in auditorium, amphitheater hall, rows, wooden desks, seats, daytime, indoor, light from the

The young man sneezes in the direction of.

The hungry visitor comes to the cafe and unbearable waits menu. 4K.

Professor, Chemist, Biologist, Teacher Closeup, Man in White Medical Robe and Glasses, took off the glasses, looking to the left, Walking Down by stairs in auditorium, amphitheater hall, rows, wooden desks, seats, daytime, indoor, light from the

Man is Working With Clay, Blurred Kid, Little Girl is Walking by Workshop, girl in blue dress, Man is Covering a Clay Pot and Cat Statuette Fixed to a Pot, Cover Raw Clay with Water, Working Attentively, Using a Brush, Middle Aged Man with Beard,

Man With Mustache Sweaty Face Eyes Close Up Orange Light Workers Men in Safety Helmets, Donetsk Metallurgical Plant, pouring of liquid metal from ore, metal rolling, indoors, factory, industry, Ukraine

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