1945米軍地図＞＜
出典＞＜Japan AMS Topographic Maps - Perry-Castañeda Map Collection - UT Library Online https://maps.lib.utexas.edu/maps/ams/japan/
思考の /dev/null
出典＞＜
Japan AMS Topographic Maps - Perry-Castañeda Map Collection - UT Library Online https://maps.lib.utexas.edu/maps/ams/japan/