National Academies Press has made the great majority of its PDF publications available for free download (http://www8.nationalacademies.org/onpinews/newsitem.aspx?RecordID=06022011). The report, The Polygraph and Lie Detection, is among the books that are now free. It can be downloaded here:
http://www.nap.edu/catalog.php?record_id=10420
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