| 其他書名 | The results of analysis of heartwood and sapwood of some American woods. VI |
| 出版 | U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 1923 |
| URL | http://books.google.com.hk/books?id=eSonalU0OkYC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |