Japanese Civilian Import Requirement (Period 1 July 1947 - 30 June 1948), Status of Import Action as of March 1948 (文書名:GHQ/SCAP Records, Natural Resources Section = 連合国最高司令官総司令部天然資源局文書) (課係名等:Mining & Geology Division) (シリーズ名:Mine Reports, 1946-51) (ボックス番号:9229 ; フォルダ番号:10)
Japanese Civilian Import Requirement (Period 1 July 1947 - 30 June 1948), Status of Import Action as of March 1948