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men and women listen to chemistry lecture from teacher; 1956 - old professor stock videos & royalty-free footage00:06Men and women listen to chemistry lecture from teacher; 1956Teacher, Chemistry, Archival
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computer scientist edward fredkin, speaking in 1982, on the historic significance of the development of artificial intelligence in the overall... - old professor stock videos & royalty-free footage00:54Scientist, Edward Fredkin on historic significance of AI; 1982Outer Space, Big Bang, Archival
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1959 water as industrial power source, resource: johns hopkins science review - old professor stock videos & royalty-free footage01:121959 Water as Industrial Power Source, Resource: Johns Hopkins Science ReviewOld-fashioned, Hydroelectric Power, Archival
senior educator using a large tv screen to explain trigonometry to adult students - old professor stock videos & royalty-free footage00:13Senior educator using a large TV screen to explain trigonometry to adult studentsLecturer, Mathematics, Mathematical Symbol
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dolly:child pretending to be a teacher... - old professor stock videos & royalty-free footage00:13DOLLY:Child pretending to be a teacher...Lecturer, Teacher
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little scientist - old professor stock videos & royalty-free footage00:21Little ScientistChild, Old-fashioned, Light Bulb
