| 其他書名 | Metallurgical Division. Ore-dressing studies of manganese ores : concentration of manganese ores from the Little Florida mountains, Luna County, N. Mex |
| 出版 | U.S. Department of the Interior, Bureau of Mines, 1942 |
| URL | http://books.google.com.hk/books?id=HXJ4o6tyoHUC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |