Gavin McKinnon

Blackstone's Police Manual Volume 4: General Police Duties 2015

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Blackstone's Police Investigators' Manual and Workbook 2011

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Blackstone's Police Manuals Volume 4: General Police Duties 2019

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Blackstone's Police Manuals 2020: Four Volume Set

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Blackstone's Police Manuals Volume 4: General Police Duties 2020

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Blackstone's Police Manual Volume 2: Evidence and Procedure 2016

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Blackstone's Police Manual Volume 4: General Police Duties 2016

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Blackstone's Police Manual Volume 4: General Police Duties 2017

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