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DTR Group

+1 (925) 667-1769
Website

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4115 Blackhawk Plaza Cir Ste 100
Danville, CA 94506
+1 (925) 667-1769
http://www.dtrgroup.org

History

DTR Group's owner, David Roby, PhD., retired after serving 27 years as a police officer and earning his PhD in clinical psychology. He combined both his interests in law enforcement and psychology to open DTR Group. Let him find the truth for you!

Specialties

DTR Group offers polygraph examinations, private investigations and process serving in the greater San Francisco bay area.

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United States›California›Danville›DTR Group

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