Paper Tester Stock Videos

Browse 1,531 paper tester videos and clips available to use in your projects, or start a new search to explore more footage and b-roll video clips.

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the tobacco problem: what do you think? - part 11 of 28. presents historical perspective and timely data on the smoking habit and health risks. although ad campaigns continue to glamorize smoking, researchers demonstrate that heavy smoking now is known to - paper tester stock videos & royalty-free footage
00:31
The Tobacco Problem: What Do You Think? - part 11 of 28. Presents historical perspective and timely data on the smoking habit and health risks. Although ad campaigns continue to glamorize smoking, researchers demonstrate that heavy smoking now is known to
Paper, Problems
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the tobacco problem: what do you think? - part 10 of 28. presents historical perspective and timely data on the smoking habit and health risks. although ad campaigns continue to glamorize smoking, researchers demonstrate that heavy smoking now is known to - paper tester stock videos & royalty-free footage
00:31
The Tobacco Problem: What Do You Think? - part 10 of 28. Presents historical perspective and timely data on the smoking habit and health risks. Although ad campaigns continue to glamorize smoking, researchers demonstrate that heavy smoking now is known to
Laboratory, 1970-1979, People
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work of the kidneys - part 9 of 19. describes structure and function of the renal system, and explains how the kidneys maintain uniformity in blood and tissues. demonstrates, with animated drawings and laboratory experiments, the formation of urine, regul - paper tester stock videos & royalty-free footage
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Work of the Kidneys - part 9 of 19. Describes structure and function of the renal system, and explains how the kidneys maintain uniformity in blood and tissues. Demonstrates, with animated drawings and laboratory experiments, the formation of urine, regul
Laboratory, Healthcare And Medicine, Old-fashioned
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plankton and the open sea - part 30 of 32. demonstrates the importance of the minute plankton organisms to marine food chains. typical forms of plankton are shown. photomicrography and laboratory experiments show how plankton are studied at sea, in floati - paper tester stock videos & royalty-free footage
00:32
Plankton and the Open Sea - part 30 of 32. Demonstrates the importance of the minute plankton organisms to marine food chains. Typical forms of plankton are shown. Photomicrography and laboratory experiments show how plankton are studied at sea, in floati
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