| 其他書名 | Progress Report Covering Tests with Straight Flaring Sidewalls and 1 Percent Channel Slope |
| 出版 | U.S. Department of Agriculture, Soil Conservation Service - Research, 1949 |
| URL | http://books.google.com.hk/books?id=cadWAAAAMAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |