Japan, Oita-ken.United States. Department of State. Interim Research and Intelligence Service. Research and Analysis Branch[1945?]"Base from A.M.S. L571, 1:250,000.""No. 7207--R & A, IRIS/CAHSA. 5 October 1945."Includes 3 ancillary maps, glossary, reliability table, and list of gun.cartographic