| 其他書名 | First Biennal Report of the Maryland State Weather Service for the Years 1892 and 1893 (by William B. Clark) |
| 出版 | United States. Department of Agriculture, Weather Bureau, 1894 |
| URL | http://books.google.com.hk/books?id=uwfDXwAACAAJ&hl=&source=gbs_api |