| 其他書名 | Preliminary Report Submitted to the Joint Committee on Postage on Second-class Mail Matter and Compensation for the Transportation of Mail, of the Congress of the United States |
| 出版 | U.S. Government Printing Office, 1913 |
| URL | http://books.google.com.hk/books?id=8AUvAAAAMAAJ&hl=&source=gbs_api |