Small Arms Training. Volume I, Pamphlet No.2, Mortar (4.2-inch). 1943 - Engeland Voorschrift Small Arms Training. - Brits voorschrift Machine Gun Handbook. (Technical). Volume I, Pamphlet no. 1. Vickers.303 inch and 5 inch Machine Guns and Appurtenances. WO 888 - Engeland Voorschrift 26/Publications/3431 Handbook of the Gun, Machine, Polsten, 20 mm. MK. I. WO 808 - Engeland Voorschrift 26/Manuals/3351