field survey pamphlet Machine computing / prep. under the direction of the Chief of the Imperial General Staff ; [issued by the War Office] field survey pamphlet Lithographic processes / prep. under the dir. of the Chief of the Imperial General Staff ; [issued by the War Office] Handbook for the ordnance, Q.F.25-Pounder : Marks II and III on carriage, 25-Pounder Mark I and Mounting, S.P.25-Pounder C Mark I and Mounting, Valentine, 25-Pounder …
