1. DMO/ADD/41/3/2 Reference (shelfmark): DMO/ADD/41/3/2 Title: Some General Principles of Imperial Defence. Printed for the Committee of Imperial Defence. March 1928. Secret.' '(Signed) G.N. Macready, Secretary, Oversea Defence Committee. Collection Area: Map Collections Languages: English Date Range: 1928 Extent: 1 booklet (19 pages)