| 其他書名 | Transformation Challenges Present Significant Risks : Statement by David M. Walker, Comptroller General of the United States, Before the Committee on Government Reform, House of Representatives |
| 出版 | The Office, 2001 |
| URL | http://books.google.com.hk/books?id=jgVxnQEACAAJ&hl=&source=gbs_api |