| 其他書名 | Testimony of General Comstock ... [et Al.], Given Before the Commerce Committee, U.S. Senate, May 13 and 14, 1890 |
| 出版 | Executive Committee, Interstate Mississippi River Improvement and Levee Association, 1890 |
| URL | http://books.google.com.hk/books?id=oyg-AAAAYAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |