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Aimed at the busy professional who aspires to become certified in the field, Criminal Investigation for the Professional Investigator details essential techniques a trained investigator will be cal...

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Practical Handbook for Private Investigators is a compendium of work performed by private investigators. It includes descriptions of the various types of investigations, case studies, and common mi...

Unlike other such manuals, this one combines specialized info from dozens of scientific and investigative references in one handy volume. A must for detectives, pathologists, attorneys, crime scene...

An exact reprint of the same manual used by the Drug Enforcement Administration to train its narcotic investigators, this extremely hard-to-find volume details every possible angle involved with dr...