| 其他書名 | Fluorine Content of Samples from the Vast Quantities of Lacustrine Clay in the San Luis Valley Ranged from 170 to 970 Ppm |
| 出版 | U.S. Government Printing Office, 1949 |
| URL | http://books.google.com.hk/books?id=6kZSAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |