Supplement to NRS Report No. 12 - Sources of Phosphate for Japan: Sources of Phosphate for Japan (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:Editorial & Production Division) (シリーズ名:Topical File, 1945-52) (ボックス番号:9124 ; フォルダ番号:8)
Supplement to NRS Report No. 12 - Sources of Phosphate for Japan: Sources of Phosphate for Japan