Aviation drug investigator's guide

United States. -- Federal Aviation Administration. -- Drug Investigations Support Unit -- Handbooks, manuals, etc U.S. Customs Service. -- Office of Enforcement -- Handbooks, manuals, etc United States. -- Drug Enforcement Administration -- Handbooks, manuals, etc Aeronautics in police work -- United States -- Handbooks, manuals, etc Drug control -- United States -- Handbooks, manuals, etc