"This handbook contains information on the NW Luzon area as defined in the Orientation Map. It is intended to provide basic topographical information of military interest for the use of officers in forward areas. The maps included are intended as guides only, to be used in conjunction with operational maps. By command of General MacArthur." -- Copyright page.
English.
Military geography--Philippines--Luzon, Northwestern--Maps. Physical geography--Philippines--Luzon, Northwestern--Maps.