| 其他書名 | Analysis of Day Trips in an Urban Setting |
| 出版 | Environmental Protection Agency, Office of Research and Development, Office of Health and Ecological Effects, 1978 |
| URL | http://books.google.com.hk/books?id=AcVFAQAAIAAJ&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |