Japanese Economic Statistics (Apr - Jun 1956) Bulletin No. 116 - 118, Section III: Population, Labor, Food Supply and Prices (Economic Planning Board, Japanese Government)
(文書名:USCAR Records, The Comptroller Department = 琉球列島米国民政府計画局文書) (シリーズ名:201-07 Reference Publication Files of Japanese Economic Statistics, 1949-1958) (ボックス番号:122 ; フォルダ番号:12)