Polygraph History - The Polygraph Guy

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• The Curious Story Of How The Lie Detector Came To Be - BBC News

• A Brief History Of The Lie Detector - IEEE Spectrum

• Polygraph - Wikipedia

• A Review Of The Polygraph: History, Methodology And Current Status

• History Of The Polygraph Machine

• Brief History Of The Polygraph

• Lie Detector Invention History - History Of The Polygraph Machine

• The Origins Of The Polygraph - Countway Library

• History Of The Polygraph Machine

• Brief History Of The Polygraph

• The Invention Of The Polygraph - America Comes Alive

• Polygraph First Used To Get A Conviction, February 2, 1935 - EDN

• History Of The Polygraph - Детектор лжи

• The History Of Lie Detectors - Truth Verifier Systems, Inc.