| 其他書名 | Revision of American Standard Safety Rules for Installing and Using Electrical Equipment in Coal Mines, M2-1926 |
| 出版 | U.S. Government Printing Office, 1951 |
| URL | http://books.google.com.hk/books?id=CrrqWsmJEHoC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |