Training Memorandum. no. 7. Royal Engineers.1943 - Engeland Voorschrift 26/Gen/9485 Training Memorandum. no. 10. Royal Engineers. - Engeland Voorschrift 26/GS Publications/1163 Training Memorandum. no. 12. Royal Engineers. - Engeland Voorschrift 26/GS Publications/1249 Training Memorandum. no. 11. Royal Engineers. Supplement. Prefabricated bituminous surfacing (P.B.S). method of advanced landing groud (A.L.G). Runway Construction. - Engeland Voorschrift 26/GS Publications/1269 Training Memorandum. no. 13. Royal Engineers. - Engeland Voorschrift 26/GS Publications/1296 Training Memorandum. no. 21. Royal Engineers. Special Training Number. WO 7160 - Engeland Voorschrift 26/GS Trg Publications/1631 Training Memorandum. no. 25. Royal Engineers. WO 8362 - Engeland Voorschrift 26/GS Trg Publcations/1751