Manual of map reading, air photo reading, and field sketching : part I ; map reading 1955 / the war office. Great Britain. War Office. Military topography. Map reading. Military sketching. Photographic interpretation (Military science) UG470 .G79 1956 526.88 GRM Supersedes the 1929 ed., WO code no. 7195. London : H.M. Stationery Off., 1954. 1954. 1957 Text vii, 132 p. : eng