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This short dramatized documentary film, presented by U.S. Army, introduces use of polygraph in investigation. Polygraph is used as a lie detector that measures blood pressures, pulse, respiration, skin conductivity while suspect is asked questions and answering them.
Runtime: 26 minutes
Release: Aug 29, 1947
IMDb: 0.00/10 by 0 users
Popularity: 0
Country: United States of America
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Budget: 0
Revenue: 0
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