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![First Principles of Field-Fortification : Containing concise and familiar precepts for the construction, attack, and defence of field-works; ... By [Paperback]](/itemImage/2/6/1/2/2_5953210.jpg "First Principles of Field-Fortification : Containing concise and familiar precepts for the construction, attack, and defence of field-works; ... By [Paperback]")