| 其他書名 | Effect of petrographic composition and rank of coal / by C.H. Fisher, G.C. Sprunk, A. Eisner, H.J. O'Donnell, L. Clarke, and H.H. Storch |
| 出版 | U.S. Department of the Interior, Bureau of Mines, 1942 |
| URL | http://books.google.com.hk/books?id=5qQOsKD8WIEC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |