| 其他書名 | Hearings Before the United States Senate Committee on Interior and Insular Affairs, Subcommittee on Minerals, Materials, and Fuels, Eighty-Seventh Congress, First Session, on June 22, 1961 |
| 出版 | U.S. Government Printing Office, 1961 |
| URL | http://books.google.com.hk/books?id=GtdEAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |