Entree van een gebouw met stenen trap en openstaande deur military training pamphlet Mines and booby traps : The breaching of minefields - Engeland Voorschrift, 26/GS Publications/982 military training pamphlet Mines and booby traps : How to deal with individual mechanisms - Engeland Voorschrift, 26/GS Publications/981 military training pamphlet Mines and booby traps : Laying and recording of British mines - Engeland Voorschrift, 26/GS Publications/1167 military training pamphlet Mines and booby traps : Enemy methods of minelaying (illustrated) - Engeland 26/GS Publications/1344
