lecturer tells and shows presentation on projective screen to packed house of listeners

Name: Lecturer Tells Shows Presentation On Projective
Uploaded: 2018-03-24T00:00:00.000Z
Duration: 7 s
Channel: Gennady Danilkin
Description: lecturer tells and shows presentation on projective screen to packed house of listeners Stock Footage Video (100% Royalty-free) 1008956930 | Shutterstock