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American Polygraph Association
www.polygraph.org/
Posted February 16, 2012 at 2:08 PM
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American Association of Police Polygraphists
www.policepolygraph.org/
Posted February 16, 2012 at 2:12 PM
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The Polygraph Place
www.polygraphplace.com/index.htm
Posted February 20, 2012 at 1:04 PM
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Limestone Technologies Inc.
www.limestonetech.com/index.cfm/product-lines/credibility-assessment/polygraph-professional-suite/software/
Posted February 21, 2012 at 10:45 AM
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Lafayette Instrument
www.lafayetteinstrument.com
Posted February 21, 2012 at 1:52 PM
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