Books by John P. McGuire:
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McGuire, John P. (John Patrick), 1937-: Handbook for a Field Research Program for Driver's License Law Enforcement: User Guidelines and Handbook (DOT HS-800 842; Washington: US Dept. of Transportation, National Highway Traffic Safety Administration, 1973) (page images at HathiTrust)
Additional books by John P. McGuire in the extended shelves:
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McGuire, John P. (John Patrick), 1937-: An optimum system for traffic enforcement/driver control : final report (GTE Sylvania, 1971), also by Roy Finkelstein, California. Department of Motor Vehicles, and GTE Sylvania Incorporated (page images at HathiTrust)
Find more by John P. McGuire at your library, or elsewhere.