| 其他書名 | Intermittent Sand Filter Systems |
| 出版 | Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 1980 |
| URL | http://books.google.com.hk/books?id=mEi_C8Ge1gEC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |