| 其他書名 | Hearing Before the Subcommittee on Rivers and Harbors and the Subcommittee on Flood Control of the Committee on Public Works, House of Representatives, Ninety-first Congress, Second Session |
| 出版 | U.S. Government Printing Office, 1971 |
| URL | http://books.google.com.hk/books?id=Pjo2AQAAIAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |