| 其他書名 | Reexamination of Nonmagnetic Taconite Occurrences in the Hibbing, Minn., Area by Flotation, Magnetic Separation, and Petrographic Methods |
| 出版 | U.S. Department of the Interior, Bureau of Mines, 1967 |
| URL | http://books.google.com.hk/books?id=4boGPuWCiRsC&hl=&source=gbs_api |