| 其他書名 | Letter from the Secretary of Agriculture Transmitting in Response to S. Res. 175 (72nd Congress), the Report of the Forest Service of the Agricultural Department on the Forest Problem of the United States |
| 出版 | U.S. Government Print., Office, 1933 |
| URL | http://books.google.com.hk/books?id=mUdvwJ0F1lMC&hl=&source=gbs_api |