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Suspects and Witnesses: Part IV Use of Polygraph in Investigations 1947 Fergees Unbeheinde tagong
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 minuten
Kwaliteit: HD
Loslitte: Aug 29, 1947
Lân: United States of America
Taal:
Keyword :
