| 其他書名 | Message from the President of the United States, Transmitting the Sixth Protocol of Supplementary Concessions to the General Agreement on Tariffs and Trade, Pursuant to Section 4 of the Trade Agreements Extension Act of 1951, as Amended |
| 出版 | U.S. Government Printing Office, 1956 |
| URL | http://books.google.com.hk/books?id=GmYqAQAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |