| 其他書名 | Maritime Administration Title XI, Vessels Engaged in Offshore Oil and Gas Drilling Operations |
| 出版 | U.S. Department of Commerce, Maritime Administration, 1975 |
| URL | http://books.google.com.hk/books?id=AtTsOEQkCpEC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |